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nordsb [41]
3 years ago
7

Yeah, I need help again. IM NOT GOOD AT MATH

Mathematics
1 answer:
laila [671]3 years ago
5 0

Answer:

21

Step-by-step explanation:

7 * 3 =21

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I need help asap please and thank you
Juliette [100K]

Answer:

100

Step-by-step explanation:

14. in × 7 in = 98. in So 98 Rounded to the nearest Tenth is 100. in

4 0
3 years ago
What is the slope of the equation 3x + 5y = -20
saul85 [17]

you would add 3y+5y and get 8y=-20

then the slope would be 8/1 and your y-intercept would be -20

3 0
3 years ago
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How do I find out if it is proportional or not?
rewona [7]

Answer:

To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them. If the reduced fractions are all the same, then you have proportional ratios.

Step-by-step explanation:

5 0
3 years ago
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Forth grade math: What happens to the area of the triangle when one of the dimensions is doubled and halved?
Alja [10]

\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ b=\stackrel{doubled}{2b} \end{cases}\implies A=\cfrac{1}{2}(2b)(h)\implies \stackrel{\textit{twice as the original area}}{A=bh} \\\\[-0.35em] ~\dotfill

\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ h=\stackrel{halved}{\frac{h}{2}} \end{cases}\implies A=\cfrac{1}{2}b\left( \cfrac{h}{2} \right)\implies \stackrel{\textit{half of the original area}}{A=\cfrac{1}{2}bh\left( \cfrac{1}{2} \right)}

7 0
4 years ago
What is the area of a pizza with a
Anna11 [10]

Answer:

15.7 inch^2

Step-by-step explanation:

A pizza is circular in shape.

Therefore,

Area of a circle = pi r^2

radius r =d/2

From the question , diameter given is 10

r = 10/2 = 5

Pi = 3.142

Area = 3.142 x 5

= 15.71

= 15.7 inch^2

3 0
4 years ago
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