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2 years ago

Solve the following system of linear equations by graphing: 2x + 2y = 10 8x + 8y = 24

Mathematics

1 answer:

andriy [413]2 years ago

7 0

Answer:

Step-by-step explanation:

-8x - 8y = -20

8x + 8y = 24

0 ≠ 4

2y = -2x + 10

y = -x + 5

8y = -8x + 24

y = -x + 3

inconsistent

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The chorus at an elementary school is made up on fifth and sixth graders. This year, the chorus had 12 fifth-grade girls, 9 fift

Sveta_85 [38]

Answer:

A. Ratio boys to girls ---> 19 : 26

B. Ratio of 5th grade to 6th grade ---> 21 : 24

C. Ratio of girls to total number of chorus students ---> 26 : 45

Step-by-step explanation:

A. the amount of boys is 9 + 10, the amount of girls is 12 + 26

B. the amount of 5th graders is 12 + 9, the amount of 6th graders is 14 + 10

C. the number of girls is 12 + 14, and the number of chorus students is 12+9+14+10

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3 years ago

What is the equation of the line that passes through the point(−7,−1) and has a slope of 1?

bonufazy [111]

Answer:

y=x+6

Step-by-step explanation:

Put (-7,-1) into

y-y1=m(x-x1) form, and m=1 (the slope)

y+1=1(x+7)

y+1=x+7

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4 0

2 years ago

Andy has three planks of wood. Two planks are each 1.5 m long. One plank is 2.5m long. What is the total length of all the three

11Alexandr11 [23.1K]

Given:

Two planks are each 1.5 m long.

One plank is 2.5m long.

To find:

The total length of all the three planks.

Solution:

Two planks are each 1.5 m long. So,

First plank = 1.5 m

Second plank = 1.5 m

One plank is 2.5m long. So,

Third plank = 2.5 m

Now, the total length of all the three planks is

$\text{Total length}=\text{First plank + Second plank + Third plank}$

$\text{Total length}=1.5+1.5+2.5$

$\text{Total length}=5.5$

Therefore, the total length of all the three planks is 5.5 m.

4 0

3 years ago

The graph below shows the prices of different numbers of boots at a store: A graph is shown. The values on the x axis are 0, 2,

kobusy [5.1K]

Answer:

b=12.50p

Step-by-step explanation:

Given :

x y

0 0

2 25

4 50

6 75

8 100

10 125

To Find: Which equation can be used to determine p, the cost of b boots?

Solution :

Using point slope form Find the equation of line of the given coordinates

Let $(x_{1} , y_{1})=(0,0)$

Let $(x_{2} , y_{2})=(2,25)$

So, formula : $y-y_{1} =\frac{y_{2}- y_{1}}{x_{2}- x_{1}} *(x-x_{1})$

$y-0 =\frac{25-0}{2-0} *(x-0)$

$y= 12.50x$

Now we are given that cost of b boots is p

Since we are given that x axis is Number of Boots and y in price

So in the equation put x = b and y = p

So, equation : b=12.50p

Hence Option 4 is correct

5 0

3 years ago

Read 2 more answers

What is 85% of 146.54??

lana66690 [7]

Your answer would be 124.559

7 0

3 years ago