6x+8y=20
8x+y=18
find x and y
​

Answer:

Step-by-step explanation:

Multiplying decimals is not as hard as you think :)

Example 1:

Multiply: 5.2 x 4.5

Step #1: Line up the decimals

Step #2: Multiply like you usually would when multiplying two numbers.

Step #3: Move your decimal twice to the left to get 23.40

Work:

  5.2

x 4.5

 260

+ 2080

 23.40 (I moved the decimal twice to the left from the zero)

Answer:

Step-by-step explanation:

Answer:

27 questions

Step-by-step explanation:

Hope this helps!

Answer:

27

Step-by-step explanation:

Answer:

No, it is not.

Step-by-step explanation:

A right triangle must have one angle that is equal to exactly 90 degrees.

We will see that the next term in the sequence is 52

First, we need to identify the sequence that we have, it is:

127, 144, 48, 66, 33

By taking the difference between the numbers, we get:

144 - 127 = 17

48 - 144 = -96

66 - 48 = 18

33 - 66 = -33

So first grows  17 units, then decreases, then grows 18 units, then decreases, we can think that the next number will be 19 units larger than the previous one, so the next number can be:

33 + 19 = 52

So the next term in the sequence would be 52

If you want to learn more about sequences, you can read:

https://brainly.com/question/7882626

Answer: 35log4x

Step-by-step explanation:

Answer:

Using function concepts, we have that:

1. Non-linear

2.

B)

x y

0 1

1 2

2 5

3 10

3. Linear

4.

: Linear

: Linear

: Non-Linear

: Linear

5. Linear

In a linear function, the rate of change is constant.

A linear function is also of the first degree.

Item 1:

From -3 to -1, the rate of change is of

From -1 to 1, the rate of change is of .

Different rates of change, so non-linear.

Item 2:

At function b, from 0 to 1, the rate of change is of 1, from 1 to 2 of 3, different rates of change, so non-linear.

Item 3:

Highest degree of x is 1, so first degree, and thus linear.

Item 4:

The only non-linear is , which is of the second degree.

is a constant function, with a rate of change of 0, so linear.

The last function is written as:

Highest degree of x is 1, so also linear.

Item 5:

In all cases, the rate of change is constant, so linear

Step-by-step explanation:

Answer:

Graph uploaded!

Step-by-step explanation:

First, let's solve the distributive property.

Now, let's plot this inequality on the line. Please check my graph.

Hoped this helped!

Answer:

120/99 is the answer.

Step-by-step explanation:

It has a line over it means that after the point there are infinite numbers of 21.

•Multiply 1.212121... with 100

we get 121.212121...

•Subtract it with the original one

121.212121.. - 1.212121... = 120.000.. = 120

Write it as an equation :-

Let the fraction be x.

(100×x) - x = 120

100x-x = 120

or, 99x = 120

so, x = 120/99

Answer:

$8.11

Step-by-step explanation:

Original Price: $16.95

Discount: 54% Decimal Form: .54

Tax: 4% Decimal Form: .04

Let's start with the discount...

16.95 x .54 =9.153 Round = 9.15

16.95 - 9.15=7.80

Now, for the tax..

7.80 x .04=0.312 Round = 0.31

7.80 + 0.31=8.11

Hence. the Selling price is $8.11

Answer:

G)

Step-by-step explanation:

Answer:

  a) cannot be determined

  b) a triangle can be drawn, but its dimensions cannot be determined

Step-by-step explanation:

The vertical axis is labeled in units of kilometers. The horizontal axis is labeled as distance, with no units given. The line shown appears to descend from 12 units above ground level over a distance of 34 units along ground level. One could argue the slope is 12/34 = 6/17, but there is no indication the horizontal units are the same as the vertical units.

The slope of the graph cannot be determined, because we don't know the horizontal units.

__

You can draw the triangle, but you cannot determine its dimensions.

Answer:

  x° = 54.5°

Step-by-step explanation:

The measure of angle x is half the difference of the intercepted arcs. The larger arc is shown as 141°. The smaller one must be computed from the arcs shown:

  360° -187° -141° = 32°

So, the measure of x° is ...

  x° = (141° -32°)/2

  x° = 54.5°

Answer:

a > -5/2

or

a > -2.5

Step-by-step explanation:

5 + 10a > -20

10a > -20 -5

10a > -25

a > -25/10 or -25 ÷ 10

a > -5/2 or -2.5

Answer:

A

Step-by-step explanation:

An asymptote is a line that a curve approaches, as it heads towards infinity.

It is easy to spot the asymptotes for any given rational function - simply work out which value of x would make the denominator zero.

Function A has asymptotes at x = -3 and x = 7.  This is consistent with the graph, where the asymptotes are marked as red dash lines at x = -3 and x = 7

For info, function D has asymptotes at x = -7 and x = 3.  So the shape of the curve would be the same as the given diagram, but it would be 4 units to the left.

Answer:

x + y = 18

Step-by-step explanation:

simply transfer the variable 'x' to the other side of the equation. hope this helps you :)

Answer:

Step-by-step explanation:

[tex]\sf d=-20+11t[/tex] [tex]\sf when[/tex] [tex]\sf t=11[/tex]

[tex]\sf d=-20+11(11)[/tex]

[tex]\sf d=-20+121[/tex]

[tex]\sf d=101[/tex]

Hope it helps!

[tex]\\ \sf\longmapsto 3x+5=6x-7[/tex]

[tex]\\ \sf\longmapsto 6x-3x=5+7[/tex]

[tex]\\ \sf\longmapsto 3x=12[/tex]

[tex]\\ \sf\longmapsto x=4[/tex]

Answer:

Step-by-step explanation:

We know that:

Given:

Solution:

Taking the "-7" on the LHS and the "3x" on the RHS:

Adding/Subtracting:

Dividing:

Now, let's substitute the value of x into the expression of SP.

Hence, the measure of SP is 17 units.

You need to move everything to one side.

Subtract 2x on both sides, to get the equation 3y = -2x + 12.

Then, divide by 3 on both sides, to get y = -2/3x + 4.

Now we know that the slope is -2/3, and the y-intercept is (0,4).

Plot a point at (0,4), and plot according to the slope, then take the x-intercept plotted.

Answer:

Step-by-step explanation:

9.

sin x=cos y

x+y=90

4x+14+(-3x+73)=90

4x+14-3x+73=90

x+87=90

x=90-87=3

4x+14=4(3)+14=12+14=26

x=26°

y=90-26=64°

angles are 26°,64°

10.

let horizontal distance=x

[tex]\frac{300}{x} =tan15\\\frac{x}{300} =cot~15=cot(90-75)=tan 75\\x=300 \times ~\tan ~75 \approx 1119.62 \approx 1120~ft[/tex]

[5] Find two angles that satisfy the equation sin(4x + 14)º = cos(–3x + 73)º. *

Answer:

[tex]26[/tex]° [tex]and[/tex] [tex]64[/tex]°

Step-by-step explanation:

[tex]sin[/tex] [tex]x = cos[/tex] [tex]y[/tex]

[tex]x+y=90[/tex]

[tex]4x+14+(-3x+73)=90[/tex]

[tex]4x+14-3x+73=90[/tex]

[tex]x+87=90[/tex]

[tex]x=90-87=3[/tex]

[tex]4x+14=4(3)+14=12+14=26[/tex]

[tex]x=26[/tex]°

[tex]y=90-26=64[/tex]°

[tex]Hence,[/tex] [tex]Answer[/tex] [tex]is[/tex] [tex]26[/tex]° [tex]and[/tex] [tex]64[/tex] °

[10] An eagle 300 feet in the air spots its prey on the ground. The angle of depression to its prey is 15°. What is the horizontal distance between the eagle and its prey? Round to the nearest foot.

Answer:

[tex]1120 ft[/tex]

Step-by-step explanation:

[tex]d =distance[/tex]

[tex]tan(15)=300/d[/tex]

[tex]d=300/tan(15)[/tex]

[tex]d=1119.6ft=1120ft[/tex]

Answer: 2

Step-by-step explanation: Since the y value is 2 when the x value is zero, the initial value is 2.

Answer:

40.56 ft

Step-by-step explanation:

The perimeter of a circle is equivalent to [tex]2\pi r[/tex], where r = radius. Therefore, the perimeter of a semicircle should be [tex]\frac{2\pi r}{2}[/tex]

In this case, we're given the diameter of the semicircle as 8, so we divide the diameter by 2 and get the radius as 4. Now, let's solve the circumference of the semicircle.

Now, we're given the lengths of the rectangle as 8, 10, and 10. The perimeter of the rectangle (excluding the inner side) is 28.

28 + 12.56 = 40.56

Therefore, the perimeter is 40.56 ft.

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

Answer:

4 for the first box and 2*2*19 for the second.

Step-by-step explanation:

I did this lesson in 4th grade

Answer:

_4_ is not a prime number.

The correct prime factorization of 76 is  2, 2 ,19  .

Step-by-step explanation:

Answer:

The car worth in 4 years will be $9,880

Answer:

Divide the number by two.

Step-by-step explanation:

For example 50% of 50 is 25, because 50 ÷ 2 = 25.

LETS USE COMBINATION AS ORDER IS MANDATORY HERE

[tex]\\ \rm\Rrightarrow ^nC_r=\dfrac{n!}{r!(n-r)!}[/tex]

[tex]\\ \rm\Rrightarrow ^4C_3[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{4!}{3!(1!)}[/tex]

[tex]\\ \rm\Rrightarrow \dfrac{4(3!)}{3!}[/tex]

[tex]\\ \rm\Rrightarrow 4ways[/tex]

Answer:

12

Step-by-step explanation:

It is helpful to draw a sample-space diagram of all the possible outcomes:

[tex]\large \begin{array}{| c | c | c | c |}\cline{1-4} & orange & vanilla & root\:beer \\\cline{1-4} paper & 1 & 1 & 1 \\\cline{1-4} plastic & 1 & 1 & 1 \\\cline{1-4} metal & 1 & 1 & 1 \\\cline{1-4} cardboard & 1 & 1 & 1 \\\cline{1-4}\end{array}[/tex]

Therefore, there are 12 possible outcomes.

Answer:

1)

66 - 80
2)

59 - 87
3)
53 - 94

standard deviation is a measure of how many data points different from the mean each individual data point is.
if the standard deviation is 7, the range is +7 and -7 68% of the time
the data will be within 2 standard deviations +14 -14 95% of the time
the data will be within 3 standard deviations +21 -21 99.7% of the time

Answer: y=5x

Step-by-step explanation:

pls mark brainliest :)

Answer:

(5 -96)

Step-by-step explanation: