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3 years ago

Y = 7x - 10 & y = -3

Mathematics

2 answers:

belka [17]3 years ago

8 0

Answer:

x=1

Step-by-step explanation:

First, we can substitute -3 for y. So we get -3=7x-10

We then have to isolate the variable x by adding 10 to each side of the equation.

Then we have the equation 7=7x.

Finally, we divide both sides by 7.

We get the finally answer x=1 and y=-3.

fiasKO [112]3 years ago

3 0

Answer:

x=7-13

Step-by-step explanation:

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-60x+32=32x-60what is the answer

STatiana [176]

Answer:x=1

Step-by-step explanation:

-60x+32=32x-60

Collect like terms

32x+60x=60+32

92x=92

Divide both sides by 92

92x/92=92/92

x=1

4 0

3 years ago

Your friend is going to buy a used car. The one he is considering costs $4000 and will lose value at a rate of 13% per year. How

guapka [62]

13% of $4000 is $520
If the $4000 car loses value at a rate of 13% each year for 3 years
$520 x 3 = $1560
Subtract this amount from $4000
$4000 - $1560 = $2440

<u>Answer: In 3 years, the used car will be worth $2440 in 3 years</u>

6 0

3 years ago

What are the steps to solve 1-3x=4-2x

blagie [28]

Combine the like terms. move over the -3x to the right and it’s now 3x and combine it with -2x to get x. Move the 4 over to the left and it becomes -4 and combine it with the 1 to get -3. Then you are left with -3=x

7 0

3 years ago

What is the volume of a square pyramid if the perimeter of the base is 44 in and the height is 19 in.? Round to the nearest tent

Verdich [7]

Answer:

766.3 square inches

Step-by-step explanation:

The volume of pyramid is given by

volume = 1/3(area of base) * height of pyramid

Given shape of base is square and

Perimeter of that square is 44inches

We know that perimeter for square is given by 4* length of side

Thus,

44 inches = 4* length of side

 Length of side = 44/4 = 11 inches

_____________________________________________

Area of square is given by side*side.

Thus, area of square base of pyramid is = 11*11 inches square = 121 inches square

Now that we have area of base and height of pyramid .

Substituting these value in formula for volume of pyramid we have

volume = 1/3(area of base) * height of pyramid

 volume = 1/3*(121) * 19 = 2,299

 volume = 766.33

Volume of square pyramid rounded to nearest tenth is 766.3 square inches

4 0

3 years ago

(geometry) please look at attached image and help me with this question!

julsineya [31]

Answer:

m∠AEC = 139°

Step-by-step explanation:

To make the equations easier to write, let's say all measures are in degrees, and define ...

p = m∠AEB = 11x -12

q = m∠CED = m∠CEB = 4x +1

Then ...

p + 2q = 180

(11x -12) + 2(4x +1) = 180

19x -10 = 180 . . . . . . . . . . . . collect terms

19x = 190 . . . . . . . . add 10

x = 10 . . . . . . . . . . . divide by 19

p = 11x -12 = 110 -12 = 98

q = 40 +1 = 41

The angle of interest is ...

m∠AEC = p +q = 98 +41

m∠AEC = 139 . . . . degrees

8 0

3 years ago