Mathematics Middle School

Please Answer Today!!!

Answers

Answer 1

Answer:

57 90

Step-by-step explanation:

it is right trust me

Answer 2

Answer:

Marc: 8 meters & 4 seconds

Prisha: 6 meters & 3 seconds

Step-by-step explanation:

Marc: If Marc travels 8 meters in 4 seconds it means that he has a speed of 2m/s

Prisha: If Prisha travels 6 meters in 3 seconds it means that she has a speed of 2m/s

To find speed we simply have to divide distance by time

The way that I figure out the answer was by trial and error. This is when we have to get random numbers and try them.

2 seemed a reasonable answer as it couldn't a number such as 5 as there is only 1 factor of 5 between 0 and 9. There are 4 factors of 2 between 0 and 9

Hope this helps, have a great day!!

Related Questions

i will give brainliest

Answers

Probabilities can be expressed as a ratio of the total who fit the criteria and the total who do or do not. In other words, true/total. Here, there are 9 who wear green and 26 who do not. So, the probability is 9/26.

Because the question is asking about the number of female wearing green shirts, the total number of female, 26, will be in the denominator and the total number of females in green shirts, 9, will be in the numerator, so the answer will be 9/26

Which line or lines represent direct variation?

Don’t really know much about this part in math so kinda need help asap

Answers

Answer:

B straight lines that pass through the origin.

Step-by-step explanation:

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Answers

20/100*40000 *3yrs =2400

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Harry is training for a cross-country track event. The table shows the proportional relationship between his distance and time.

Distance (miles) 0.4 1.6 ?
Time (minutes) 4.8 19.2 28.8

How many miles can Harry run in 28.8 minutes?
3 miles
2.4 miles
2.1 miles
2 miles

Answers

Answer:
2.4 miles

Explanation:
4.8/0.4=12
19.2/1.6=12

So 28.8/x=12
x=2.4 miles

The answer to the question is Harry ran 2.4 miles in 28.8 minutes

Which story problem could be solved using the given equation?

Answers

It’s number 4 I think

For a craft project you need 114 inches of ribbon, but it is only sold by the meter. Determine the amount of ribbon, in meters, you need to buy for the project. (1 inch = 2.54 centimeters and 1 centimeter = 0.01 meter)

29
290
3
12

Answers

you need 3 meters of ribbon
114 in times 2.54 cm (per in) is 289.56 cm, then 289.56 cm times 0.01 m (per cm) is 2.89, then round up and you get 3 meters of ribbon

If x and y are in direct proportion and y is 80 when x is 10, find y when xx is 15.

Answers

Answer:

y = 120

Step-by-step explanation:

If x = y, they can be written as a fraction to show their proportionality as [tex]\frac{10}{80}[/tex]. This is equal to [tex]\frac{1}{8}[/tex], so when x = 1, y = 8. To find when y is equal to x when x = 15, just multiply y by 15. 15(8) = 120, so y = 120 when x = 15.

Answer:

120

Step-by-step explanation:

set up a proportion: 80/10=y/15

solve: 80*15=10y

1200=10y

y=120

solve the following proportion
x/2 = 8/9

Answers

Answer:

[tex]\huge\boxed{\sf x = 16/9}[/tex]

Step-by-step explanation:

Given proportion:

[tex]\displaystyle \frac{x}{2} =\frac{8}{9} \\\\Cross \ Multiply\\\\x \times 9=2\times 8\\\\9x = 16\\\\Divide \ 9 \ to \ both \ sides\\\\x = 16/9\\\\\rule[225]{225}{2}[/tex]

X=16/9
Cross multiply
2x8
=16
Xx9
=9x
Divide both sides by 9
=16/9

If xx and y vary directly and y is 21 when x is 7, find y when x is 5

Answers

Answer:

y = 15

Step-by-step explanation:

We need to solve for k

y = x

21 = 7k Divide both sides by 7 to solve for k

3 = k

y = xk

y = 5(3)

y = 15

Answer: y = 15

Step-by-step explanation:

The area of a garden is 12.9 square feet. Each square foot of the garden needs to have 2.6 pounds of soil.

How many pounds of soil are needed for the garden?

Answers

I am 55 percent sure is 2.6 pounds

Ashley buys a hamster wheel during the sale(25% off)
. If Ashley pays $6, what was the original price?

Answers

Answer:

Was the original price.

Step-by-step explanation:

100% - 25% = 75%

$6 ⇒ 75%

$A ⇒ 100%

A = $6* 100% / 75%

A = 8

8$ is the answer for your question

What is the product?

Answers

Answer:

-3/16

Step-by-step explanation:

Given problem,

→ (3/8) × (-3/6)

Let's solve the problem,

→ (3/8) × (-3/6)

→ (3 × -3)/(8 × 6)

→ -9/48

→ -3/16

Hence, answer is -3/16.

Answer:

[tex]\frac{1}{8}*(-\frac{3}{2})\\ =-\frac{3}{16}[/tex]

Step-by-step explanation:

Which is an equation of a direct proportion?

Answers

The correct answer is y = -2x.

Direct proportion can also be known as Direct variation. When the ratio of two quantities equals constant, we call it Direct Proportion. Direct Proportion is denoted by [tex]\alpha[/tex] .

Let us consider two quantities a and b, then the direct proportion between a and b can be expressed as,

a [tex]\alpha[/tex] b

=> [tex]a/b = k[/tex] ( where k is constant)

=> [tex]a = kb[/tex] [tex]--- >[/tex] 1

Substitute a=x and b=y in 1, and then we get

[tex]x = ky[/tex]

Therefore, the general form of an equation which satisfies direct proportion is x = ky.

[tex]y=1/2x-2, y=-2x+3,y=4/x[/tex] are not in the form of [tex]x = ky[/tex].

So, The equation of direct proportion is y = -2x.

To know more about direct proportion:

https://brainly.com/question/28596620

y = kx

where x and y are the given quantities and k is any constant value

Select all the expressions that simplify to a positive number.
1312−25.34
–10.5+1134
(−45)÷(−23)
414⋅(−1.25)
–10110+(−18.9)

Answers

Answer:-10.5+11 3/4

(-4/5)÷(-2/3)

Explanation: Correct

2 and 3 is correct
Explanation: because you can’t divide two negatives that becomes a positive and if a positive number is higher then a negative number the answer will be positive

Which product is negative?

Answers

Answer:

Step-by-step explanation:

-3x4= -12

-12x-2=24

24x-7=-168

Answer: -3·4·(-2)·(-7)

Step-by-step explanation: hope this helps!

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What is the product? pt 2

Answers

Answer:

Step-by-step explanation:

positive 360

360 is the answer to the question

A soda dispenser puts out 6 ounces of orange soda to every 8 ounces of cola.

How do you express the ratio 6:8 as a unit rate?

Answers

Step-by-step explanation:

6+8= 14

6/14×100=3/7×100=300/7=42.85

8/14×10=4/7×100=400/7=57.14

Answer:

0.75

Step-by-step explanation:

in a unit rate the denominator is always 1. So, to find unit rate divide the denominator with the numerator in a way that the denominator becomes 1.

(Proportional Relationships MC)

Which of the following tables represents the proportional relationship for 3 cups of grape juice for every one half cup of rainbow sherbet?

Rainbow Sherbet (cups) 0.5 1.5 3
Grape Juice (cups) 3 6 9

Rainbow Sherbet (cups) 3 6 9
Grape Juice (cups) 0.5 1 1.5

Grape Juice (cups) 0.5 1.5 3
Rainbow Sherbet (cups) 3 6 9

Grape Juice (cups) 3 6 9
Rainbow Sherbet (cups) 0.5 1 1.5

Answers

Answer:
Last option

Explanation:
Given 3:0.5 —> 3/0.5=6

So only last option is correct because
3/0.5=6
6/1=6
9/1.5=6

Write 5 ratio equivalent to 9:13?

Answers

18:26
27:39
36:52
45:65
54:78

Answer:

18:2627:3936:5245:6554:78

Step-by-step explanation:

Given ratio,

→ 9:13

The 5 equivalent ratios are,

→ (9 × 2):(13 × 2) = 18:26

→ (9 × 3):(13 × 3) = 27:39

→ (9 × 4):(13 × 4) = 36:52

→ (9 × 5):(13 × 5) = 45:65

→ (9 × 6):(13 × 6) = 54:78

Hence, these are the ratios.

Convert the following decimals into percentages:
0.004, 0.26 & 0.58

Answers

Step-by-step explanation:

Convert the following decimals into percentages:

0.004 * 100 = 0.4%

0.26 * 100 = 26%

0.58 * 100 = 58%

Of the pizzas sold last week at Luna's Pizzeria, 1/2 were large pizzas and 1/4 were extra-large pizzas. What fraction of the pizzas sold were either large or extra-large?

Answers

Answer:

4/8, and 2/8

Step-by-step explanation:

Answer: 4/8 for large pizzas and 2/8 for extra large

Explanation:
1/2=4/8, 1/4=2/8

I need help with this can you please help.↑↓

Answers

Answer:

O = 8

K = 0

L = 1

V = 7

I = 2

M = 4

H = 9

E = 6

T = 9

N = 5

Step-by-step explanation:

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Answer:

1) O = 8

2) K = 0

3) L = 1

4) V = 7

5) I = 2

6) M = 4

7) H = 9

8) E = 6

9) T = 9

10) N = 5

Step-by-step explanation:

Aada saves and spends her salary in the ratio of 9:4. Find
the percentage of her savings?

Answers

It’s 225%

STEPS
do 4\9 X 100

Please open the image for the following answer mark brainlist

Write the main features of the right-angled triangle and list some of its properties.

Answers

Answer: A right angle is also equal to 90 degrees The sides that include the right angle are perpendicular and the base of the triangle. The third side is called the hypotenuse, which is the longest side of all three sides.

the longest side of the right angled triangle is always called the hypotenuse no matter what also one angle in the right angled triangle is 90 degrees

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Thank you (:

Answers

Answer:

non-unifrom

Step-by-step explanation:

Non-uniform because you won’t get the same number each time you spin

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The table shows a proportional relationship between x and y.

x 12 18 30
y 4 6 10

Describe the graph of the proportional relationship, in words.
A line beginning at point (12, 4) and continuing through the point (10, 30).
A line beginning at point (12, 4) and continuing through the point (6, 18).
A line beginning at point (0, 0) and continuing through the point (30, 10).
A line beginning at point (0, 0) and continuing through the point (4, 12).

Answers

A line beginning at point (0,0) and continuing to (30,10)

A proportional relationship will always go through the origin so you can eliminate the first two. In the last one the second coordinate is (4,12) which is wrong because the x is 12 and the y is 4. So that is how you know the 3rd option is correct :)

Answer:

A line beginning at point (0,0) and continuing to (30,10)

Step-by-step explanation:

I took the exam and got it right

Find the simple intrest

P=12000, R=5%, T=2% ?

Answers

Answer:

=PxTxR/100

=12000x5x2/100

=1200

Multiply p•r•t
120,000
Then divide by 100
1200

The speed limit on an interstate highway is 65 miles per hour.

Which cars are driving at or below the speed limit?

Answers

Answer:

There are 5,280 feet in a mile.

There are 60 minutes in an hour.

As a quick check, does this answer look correct? If you were travelling 5 miles per hour slower, at a steady 60 mph, you would be driving 60 miles every 60 minutes, or a mile a minute. If you're driving 65 miles per hour, then, you ought to be going just over a mile a minute — specifically, 1 mile and 440 feet.

While it's common knowledge that an hour contains 60 minutes.

Step-by-step explanation:

If your car is traveling 65 miles per hour, then it is also going 343,200 feet (65 × 5,280 = 343,200) per hour. Then, you can divide the total feet per hour by 60, and you know that your car is traveling 5,720 feet per minute.

Answer:

WHat cars!?

Step-by-step explanation:

Draw a right-angled isosceles triangle and write its measures.

Answers

Answer:

45 ∘,45 ∘ ,90 ∘

Step-by-step explanation:

Since, the angle is right angled isosceles triangle. One of the angles will be 90 ∘

. let the other two angles be x

Thus, sum of angles = 180

90+x+x=180

2x=90

x = 45 ∘

The measure of each angle is: 45 ∘ ,45 ∘ ,90 ∘

___________

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Multiply.
(−2.1)⋅(−1.4)

Answers

C , 2.94

Two negatives - • - = + equal a positive

Answer:

(-2.1) x (-1.4) = 2.94

Step-by-step explanation:

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