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3 years ago

Please help i will give you brainliest and every yhing

Mathematics

1 answer:

Lina20 [59]3 years ago

7 0

first subtract the last equation from the first. this gives:-

-x + y = -8 .....................(1)

Then multiply the first equation by 2 and add it to the 2nd equations This gives

9x = 18

so x = 2

and from equation (1) y = -8 + 2 = -6

Substituting for x and y in the second equation

z = (24 -5(2) -12) / 2 = 1

Answer is choice b.

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Quiz

Leto [7]

Answer:

1. 50⁴ + 2³ =6250008

2. 3³ x 4²= 432

Step-by-step explanation:

I just put it into the desmos scientific calculator. If your teacher lets you, it is a good calculator.

3 0

3 years ago

Write a word problem whose solution is |-70|=70

devlian [24]

What is the absolute value of -70.

6 0

3 years ago

Sq is an angle bisector m <qst=2x and m <qsr=3x-10 what is <rst

defon

Answer:
∠RST = 40°

Explanation:
We are given that:
SQ bisects angle RST.
This means that:
∠QST = ∠QSR
2x = 3x - 10
10 = 3x - 2x
x = 10

Therefore:
∠QST = 2x = 2(10) = 20°
∠QSR = 3x - 10 = 3(10) - 10 = 30 - 10 = 20°
Note that both angles are equal.

Now, we can get ∠RST as follows:
∠RST = ∠QST + ∠QSR
∠RST = 20 + 20 = 40°

Hope this helps :)

6 0

3 years ago

0.8y+0.25= -0.4 Solve for y

disa [49]

Answer:

y = -13/16

Step-by-step explanation:

Given:

0.8y+0.25= -0.4

To Find:

Solve for y

Solution:

Multiply both sides by 100

$0.8y\cdot \:100+0.25\cdot \:100=-0.4\cdot \:100$

Simplify

$80y+25=-40$

Subtract 25 from both sides

$80y+25-25=-40-25$

Simplify

$80y=-65$

Divide both sides by 80

$\frac{80y}{80}=\frac{-65}{80}$

Simplify

$y=-\frac{13}{16}$

Thus, y = -13/16

or in decimal form it equal y = -0.8125

~Lenvy~

7 0

2 years ago

Read 2 more answers

What property is shown below?

Sunny_sXe [5.5K]

Answer:

C. Transitive Property

Step-by-step explanation:

The transitive property states that: If q = r and r = s, then q = s. In other words, if q is related to r by some property, and r is related to s by the same property, then q is related to s by that property.

8 0

3 years ago