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3 years ago

15

Thirteen more than 8 times a number is -3

2 answers:

Yuri [45]3 years ago

5 0

8x + 13 = -3

8x is 8 times a number

+13 is thirteen more than

= - 3 is -3

zmey [24]3 years ago

3 0

8x + 13 = -3
8x = -16
x = -2
The number you are looking for is -2

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Find the matrices of

aniked [119]

$\huge{\sf \left[{x-2y\atop 6x-2z}\:\:\:{4y-3\atop 2y-z}\right]=\left[{-3\atop 4}\:\:\:{5\atop 3}\right]}$

Creating equations

$\\ \sf\longmapsto x-2y=-3\dots(1)$

$\\ \sf\longmapsto 4y-3=5\dots(2)$

$\\ \sf\longmapsto 6x-2z=4\dots(3)$

$\\ \sf\longmapsto 2y-z=3\dots(3)$

From eq(2)

$\\ \sf\longmapsto 4y-3=5$

$\\ \sf\longmapsto 4y=5+3$

$\\ \sf\longmapsto 4y=8$

$\\ \sf\longmapsto y=\dfrac{8}{4}$

$\\ \bf\longmapsto y=2$

Put the value in eq(1)

$\\ \sf\longmapsto x-2y=-3$

$\\ \sf\longmapsto x=-3+2y$

$\\ \sf\longmapsto x=-3+2(2)$

$\\ \sf\longmapsto x=-3+4$

$\\ \bf\longmapsto x=1$

Put the value in eq(4)

$\\ \sf\longmapsto 2y-z=3$

$\\ \sf\longmapsto z=2y-3$

$\\ \sf\longmapsto z=2(2)-3$

$\\ \sf\longmapsto z=4-3$

$\\ \bf\longmapsto z=1$

8 0

3 years ago

Chiang picked 12 apples. She gave 1/6 of the apples to each of her 5 friends. How many apples did each friend get?

Stolb23 [73]

They each got 2 apples, because 1/6=2/12.

3 0

3 years ago

Read 2 more answers

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Answer:Your poopoo

Step-by-step explanation:

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3 years ago

What is the slope of the line that passes through the points (8, -4) and (6, 2) ? Write your answer in simplest form.

Ilia_Sergeevich [38]

Answer:

m=-3

Step-by-step explanation:

I just used the slope formula. Hope this helps! Also, I'm certain this is correct.

3 0

3 years ago

What is the value of x?<br><br> 132√ cm<br><br> 526√3 cm<br><br> 262√ cm<br><br> 263√ cm

Ivan

30 60 90 right triangle on the right
ratio of short leg: long leg :hypo = a: a√3: 2a
So if hypo = 52 cm then short leg = 52/2 = 26 cm

The other right triangle on the left is 45 45 90 because it has 2 equal sides
ratio of leg: leg :hypo = a: a: a√2

the leg = 26 cm
so hypo x = 26√2

Answer
26√2 cm

3 0

3 years ago