If t(n) = 15 - 2.5n, how do I find t1,t2,t3,and tn+1? I also have to express tn+1-tn in its simplest form.

Answer:

5% of 600 is 30, then you multiply the 30 by the 4 years which gives you 120. then you add the original 600 with the 5 person from the four years which is 120 that comes to 720. so 720 is how much is in salma's account after 4 years.

Answer:

Step-by-step explain

180 -(45+79) = 124

answer: 124

[tex]−5(²+2−4)[/tex]

[tex]−5²−10+20[/tex]

Solution :—

[tex]−5²−10+20[/tex]

Answer:

Step-by-step explanation:

-5(x² + 2x - 4) = -5x² - 10x + 20

a = -4  ; b = -10  ; c = 20

D = b² - 4ac = (-10)² - 4*(-4)*20

   = 100 + 320 = 420

[tex]\sqrt{D}=\sqrt{2*2*3*5*7}=2\sqrt{105}\\\\x=\dfrac{-b+\sqrt{D}}{2a} \ ; x =\dfrac{-b-\sqrt{D}}{2a}\\\\\\x=\dfrac{10+2\sqrt{105}}{2*(-5)} \ ; \ x =\dfrac{10-2\sqrt{105}}{2*(-5)}\\\\\\x = \dfrac{2*(5+\sqrt{105})}{2*(-5)} ; \ x =\dfrac{2*(5-\sqrt{D})}{2*(-5)}\\\\\\x =\dfrac{5+\sqrt{105}}{-5} \ ; \ x=\dfrac{5-\sqrt{105}}{-5}\\\\\\x=\dfrac{-5-\sqrt{105}}{5} \ ; \ x =\dfrac{-5+\sqrt{105}}{5}[/tex]

Answer:

80 packages

Step-by-step explanation:

0.0075*80= 0.6            5.5 + 0.6= 6.1

Answer:

AAA and SSA are not real theorems

Step-by-step explanation:

Side Side Angle is not a valid theorem because the unknown side could be located in two different places which would not prove the triangles congruent.

Angle Angle Angle is also not a valid theorem because all the angles might have congruent measures but that doesn't mean the sides will have the same measures therefore AAA cannot prove triangles congruent.

The rest are valid congruence theorems.

Answer:A12/A6= A6

Step-by-step explanation:

Answer:

Its A i just did it

Step-by-step explanation:

Answer:

$15

Step-by-step explanation:

use a calculator and type 25%x12 and you will get 3

so 3 is 25% of 12

add 12 and 3 together to get your answer. $15

Answer:

$15

Step-by-step explanation:

$12 + 25% = $15

Answer:

x+54°=90° ( Given)

x=36°

x+y°=90°

y=90°-36°

y=54°

Hope this help!

Answer:

y = 2 when x =12

Step-by-step explanation:

y = k/x ..............as y varies inversely as x

8 = k/3

k = 8 * 3

k = 24

So,

y = k/x

y = 24/12

y = 2

Answer:

"y=32"

is the answer

Step-by-step explanation:

x=3 > y=8

x=3+3+3+3=12 then y=8+8+8+8=32

[tex]\huge\text{Answer:}[/tex]

Inequality number 1: x≥7

Inequality number 2:  x<3

Inequality number 3: x≤-2

Inequality number 4: x≤7

[tex]\huge\text{Solution:}[/tex]

1. 3x+12-6x≤-9

3x-6x+12≤-9

Subtract the x's:

-3x+12≤-9

-3x≤-9-12

-3x≤-21

3x≥21

x≥7

2. x+5x-6<12

6x-6<12

Move 6 to the right, using the [tex]\bold{\underline{opposite ~operation}}[/tex]:

6x<12+6

6x<18

Now, divide both sides by 6:

x<3

3. 5(x+8)-7≤23

Use the Distributive Property:

5x+40-7≤23

5x+33≤23

5x≤23-33

5x≤-10

x≤-2

4. 4x-6≥6x-20

4x-6x≥-20+6

-2x≥-14

2x≤14

x≤7

___________________________

Note:

If we divide both sides of the inequality by a negative variable, we flip the inequality sign.

___________________________

Hope you find it helpful.

Feel free to ask if you have any doubts.

#1

#2

#3

#4

Answer:

(x-3)(5x+4)

plx give me a brainliest if its correct

Answer:

y= 128,  x=52

Step-by-step explanation:

The Sum of all the angles in a quadrilateral is 360.

y is 128 because both those angles are equal

the other 2 angles are also equal to each other.

360 - 128-128= 104

104/2 is 52

Answer:

Step-by-step explanation:

y = 128

x + y = 180 {Supplementary}

x + 128 = 180

x = 180 - 128

x = 52

Answer:

2×2×2×3

Step-by-step explanation:

[tex]24 = 8 \times 3 \\ factorize8 \\ 8 = 2 \times 2 \times 2 \\ therefore \: the \: prime \: \\ factrization \\ \: is \\ \: 24 = 2 \times 2 \times 2 \times 3[/tex]

If I am correct please follow

What are the factors of 24?

What are factors?

A factor is a number or digit that a number is divisible by.

24 is divisible by

1, 2, 3, 4, 6, 12, 24.

Now, what about prime factors? Prime numbers are only divisible by 1 and themselves.

Thus, the prime factorization  of 24 is

2*2*2*3

Hope you find it helpful.

Feel free to ask if you have any doubts.

-MistySparkles*

Answer:

the answer is c

Step-by-step explanation:

Answer:

Step-by-step explanation:

Use the formule V=4/3 *Pi*R^3

where R =10

so V=4/3*Pi*10^3

v= 4000Pi/3 =4188.7902

Answer: (x,y) = (-3, -2)

Step-by-step explanation:

yb better

Answer:

x=47

Step-by-step explanation:

all straight lines add up to 180°

we can work out x using this

we do:

180-86=94 to work out what 2x equals to

then we do

94/2=47 to find out what x equals to

x=47

hope this helps!

Answer:

X = 148

Step-by-step explanation:

Opposite angles are equal

Answer:

He will completely fill 7 boxes, although in that case, not all sweaters would be in. He needs 8 boxes so that all of the sweaters can fit- even if there's leftover space.

Step-by-step explanation:

23 / 3 = 7.6 ( 1s.f)

Answer:

Dave will fill 7 boxes, and will need 8 boxes.

Step-by-step explanation:

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Above is 23 sweaters, where 7 boxes will hold 3 sweaters and only one will hold 2 sweaters.

Answer:

6 cm

Step-by-step explanation:

The area of a triangle is [tex]\frac{bh}{2} = A[/tex], where b = base, h = height, and A = area. In this case, we're given the height as 4 cm and the area as 6 cm^2.

Let's plug in these values.

Now, let's solve this algebraically.

Step 1: Multiply both sides by 2.

Step 2: Divide both sides by 4.

Step 3: Check if solution is correct.

Therefore, the base is 6 cm. (but don't put the cm in the box because it's already there)

Have a lovely rest of your day/night, and good luck with your assignments! ♡

Using the probability concept, it is found that there is a 0.0556 = 5.56% probability that she will get a sum of 11.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem:

Then:

[tex]p = \frac{2}{36} = \frac{1}{18} = 0.0556[/tex]

0.0556 = 5.56% probability that she will get a sum of 11.

You can learn more about the probability concept at https://brainly.com/question/15536019

Explanation:

Point K is located at (1, -4)

We use the rule that [tex](x,y) \to (x,-y)[/tex] when reflecting over the x axis.

The x coordinate stays the same, but the y coordinate flips from positive to negative or vice versa.

Therefore, K(1,-4) will move to K ' (1, 4)

#b

Solve graphically

#c

Both graphs attached

Answer:

Question b

[tex]\textsf{Equation 1:} \ \dfrac12x-2y=-13[/tex]

[tex]\textsf{Equation 2:} \ x-4y=8[/tex]

Multiply Equation 2 by two:

[tex]\implies \textsf{Equation 3:} \ x+4y=-26[/tex]

Subtract Equation 2 from Equation 3:

[tex]\begin{aligned}x-4y & =8\\- \ \ \ x+4y & =-26\\\cline{1-2}-8y & =34\end{aligned}[/tex]

Solve for y:

[tex]\implies -8y=34[/tex]

[tex]\implies y = -\dfrac{17}{4}[/tex]

Substitute found value of y into Equation 2 and solve for x:

[tex]\implies x-4\left(-\dfrac{17}{4}\right)=8[/tex]

[tex]\implies x+17=8[/tex]

[tex]\implies x=-9[/tex]

Question a

[tex]\textsf{Equation 1:} \ x+y=2[/tex]

[tex]\textsf{Equation 2:} \ -3x-y=5[/tex]

Add Equation 1 and Equation 2:

[tex]\begin{aligned}x+y & = 2\\+ \ \ \ -3x-y & =5\\\cline{1-2}-2x & = 7\end{aligned}[/tex]

Solve for x:

[tex]\implies -2x=7[/tex]

[tex]\implies x = -\dfrac{7}{2}[/tex]

Substitute found value of x into Equation 1 and solve for y:

[tex]\implies \left(-\dfrac{7}{2}\right)+y=2[/tex]

[tex]\implies y=\dfrac{11}{2}[/tex]

Step-by-step explanation:

Pythagoras must be true :

c² = a² + b²

with c being the Hypotenuse (the side opposite of the 90° angle), and it is always the longest of the 3 sides.

so, the sum of the squares of the 2 smaller numbers must be the square of the largest number.

1.3² + 2² = 1.69 + 4 = 5.69

that is NOT 3.2² = 10.24

so, this is NOT a right-angled triangle.

2.1² + 4² = 4.41 + 16 = 20.41

that is NOT 5² = 25

so, this is NOT a right-angled triangle.

5² + 12² = 25 + 144 = 169 = 13²

so, yes, this is a right-angled triangle.