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3 years ago

If y is 20, what is x?

Mathematics

2 answers:

vesna_86 [32]3 years ago

8 0

When y=20 , x is −5.

GaryK [48]3 years ago

3 0

Answer:

Depends on the formula given

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the question is in the picture below, if you could show all your work so i can see how to do it, that would be appreciated.

ki77a [65]

m∠R = 27.03°

Solution:

Given In ΔQRP, p = 28 km, q = 17 km, r = 15 km

To find the measure of angle R:

Law of cosine formula for ΔQRP:

$r^{2}=p^{2}+q^{2}-2 pq \cos R$

Substitute the given values in the above formula.

$(15)^{2}=(28)^{2}+(17)^{2}-2 (28)(17) \cos R$

$225=784+289-952 \cos R$

$225=1073-952 \cos R$

Switch the given equation.

$1073-952 \cos R=225$

Subtract 1073 from both side of the equation.

$-952 \cos R=-848$

Divide by –952 on both sides.

$$ \cos R=\frac{106}{119}$

$$ R=\cos^{-1} \left(\frac{106}{119}\right)$

$R=27.03^\circ$

Hence m∠R = 27.03°.

7 0

4 years ago

Aliyah had some candy to give to her for children. She first took 10 pieces for herself and then evenly divided the rest of man

Vladimir [108]

How many children did she have?

4 0

3 years ago

WILL MARK BRAINLIEST PLS HELP<br> Will these side lengths make a triangle? 5 yds, 6 yds, 5 yds

Elina [12.6K]

Answer:

Yes!

Let the height of the triangular shaped garden be h yards. Its base would then be 5+h yards.Step-by-step explanation:

4 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1000%7D%20%2B%20%5Csqrt%5B3%5D%7B0.027%7D%20-%20%5Csqrt%5B3%5D%7B125%7D" id="

e-lub [12.9K]

Step 1: calculate the cube roots, convert the decimal into a fraction, and calculate the cube roots again

10 + 3 square root 27/1000 - 5

Step 2: calculate the cube root

10 + 3/10 -5

Step 3: subtract the #’s

5 + 3/10

Step 4: calculate and you get

53/10

Answer: 53/10

3 0

3 years ago

I’ll give brainliest!!!!! Pls help ASAP

storchak [24]

Answer:

$\sqrt[4]{x^{7} }$

Step-by-step explanation:

this is the same concept basically as simplifying $\sqrt{x}$ into $x^{\frac{1}{2} }$ . You can see that the denominator is in front of the radical and that any numbers in the numerator are the power of the number underneath.

7 0

3 years ago