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just olya [345]
3 years ago
13

5³ - 2 • 3 – (7² + 50)?

Mathematics
1 answer:
stellarik [79]3 years ago
7 0
PEMDAS use this
ok first you do 7x7 to equal 49 then add 50 to equal 99. then do 5x5x5 to equal 125. the parentheses are gone and the 5x5x5 is gone now the problem is 125-2x3-99. to finish you multiply 2x3 to equal 6 now 125-6-99=20
answer-20
You might be interested in
What is<br> 3x-y=9<br> 2x-y=7
svet-max [94.6K]

Answer:

x=2 and y= -3

Step-by-step explanation:

This is a simultaneous equation. To solve this type of equation, there are three methods; substitution, Elimination and Graphical.

But here, we would be using the substitution method.

3x-y=9 Equation 1

2x-y=7. Equation 2

Getting y from equation 2, we have

-y= 7-2x

Multiply both sides by -

y= 2x-7 Equation 3

Substituting y for 2x-7 in equation 1, we have

3x- (2x-7)=9

3x-2x+7=9

x+7=9

x=9-7

x=2

Substituting x as 2 in equation 3

y=2x-7

y= 2(2)-7

y= 4-7

y= -3

5 0
3 years ago
Read 2 more answers
2/1 divided by 3/9 pls tell me the answer
kkurt [141]

2/1 ÷ 3/9

Whenever dividing fractions , the second fraction flips

2/1* 9/3

Multiply the numerators together

Then Multiply the denominators together

18/3 then divide by 3 for 18/3

18/3÷ 3/3

= 6

Answer is 6

8 0
4 years ago
Multiply. 3(6u)
aleksandr82 [10.1K]

Answer:

3u+ 18

try that :)

6 0
2 years ago
Enrique charges $5 for every 1/5 hour he spends walking dogs.
azamat
So it would be 12 minutes and $5 per 12 minutes.
4 0
4 years ago
PLEASE HELP I WILL GIVE BRAINLIEST I REALLY NEED IT
Mila [183]

To find the area of the trapezoid we need to find the height of the trapezoid.

<h2>Trapezoid</h2>

A trapezoid is a quadrilateral which is having a pair of opposite sides as parallel and the length of the parallel sides is not equal.

<h2>Area of Trapezoid</h2>

The area of a trapezoid is given as half of the product of the height(altitude) of the trapezoid and the sum of the length of the parallel sides.

\rm{ Area\ of\ trapezoid = \dfrac{1} {2}\times height \times (Sum\ of the\ parallel\ Sides)

The area of the trapezoid is 54 units².

<h2> Given to us :</h2>

ABCD is a trapezoid

AD=10, BC = 8,

CK is the altitude altitude

Area of ∆ACD = 30

<h2>Area of ∆ACD,</h2>

In ∆ACD,

\begin{gathered}\rm { Area\ \triangle ACD = \dfrac{1}{2}\times base\times height\\\\\ \end{gathered}

Substituting the values,

30 = 1/2 * AD × CK

30 = 1/2 * 10 × CK

(30 * 2)/10 = CK

CK = 6 units

<h2 /><h2>Area of Trapezoid ABCD</h2>

\rm{ Area\ of\ trapezoid = \dfrac{1} {2}\times height \times (Sum\ of\ the\ parallell Sides)

Area ABCD = \frac{1}{2}  \times   ck \times (ad  + bc)

Area ABCD = \frac{1}{2}   \times 6 \times (10 + 8)

Area ABCD = \frac{1}{2}  \times 6 \times  (18)

Area ABCD = 54 units²

Hence, the area of the trapezoid is 54 units².

4 0
2 years ago
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