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Svetlanka [38]
2 years ago
12

WILL GIVE BRAINIEST ONLY IF YOU GET IT RIGHT!!!!

Mathematics
2 answers:
LiRa [457]2 years ago
5 0

Answer:

x = 15

Step-by-step explanation:

20^2 + x^2 = 25^2

400 + x^2 = 625

subtract each side 400

it results to 225

square root 225, to equals this -->

X = 15

zimovet [89]2 years ago
5 0

Answer:

15

Step-by-step explanation:

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Kris has finished 7/8 of 40 questions. how many were done​
VLD [36.1K]

7/8=0.875

0.875 x 40= 35

Therefore, Kris has finished 35 questions.

Hope this helps.

8 0
2 years ago
Determine if the graph shows two quantities that vary directly. If possible, determine the constant of proportionality using the
tia_tia [17]

Answer:

Option C is correct option.

Step-by-step explanation:

We need to find k constant of proportionality

In the graph below let us take the values of x and y

x=150 , y=50

x=300, y=100

x=450, y=150

Now finding k using the formula: k=\frac{y}{x}

Putting values of x and y to find k

For x=150 , y=50 k = 50/150, k =1/3

For x=300, y=100 , k=100/300 , k=1/3

For x=450, y=150, k= 150/450 , k=1/3

Since for values of x and y, k = 1/3 is constant so, the graph shows two quantities that vary directly.

So, Option C is correct option.

5 0
3 years ago
Y+5=x+3 in standard form
podryga [215]

Answer: x-y=2

Step-by-step explanation:

y+5=x+3; move variable (x) to the left-hand side and change the sign.

y-x+5=3; move the constant to the right-hand side & change the sign

y+x=3-5; reorder the terms

-x+y=3-5; calculate

-x+y=-2; change the signs on both sides

x-y=2 is your answer! hope this helps!

7 0
3 years ago
6(21)+6(31) evaluate
Artist 52 [7]
6(21)=72 6(31)=186
add 72+186=258

258 is the answer
6 0
3 years ago
Read 2 more answers
The value of loga (30a)^3 is
postnew [5]
Part 1 of the solution.

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3 years ago
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