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3 years ago

How to Solve (−5) ⋅ (−3)

Mathematics

2 answers:

Vilka [71]3 years ago

8 0

Answer:

$\tt{}15$

Step-by-step explanation:

$\tt{}( - 5) \times ( - 3)$

$\tt{}5 \times 3$

$\tt{}15 \\ \\$

anzhelika [568]3 years ago

4 0

Answer:

Step-by-step explanation:

If both numbers are negative when multiplying the answer will be positive :) so it's just like multiplying normally.

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What is 3/18 divided by 7/21... help plz

saw5 [17]

3/18 divided 7/21 =3/18 multiply by 21/7 (we have to flip the second fraction and multiply by 3/18)= 63/126=1/2
So the answer is 1/2

8 0

3 years ago

Read 2 more answers

Y varies directly as x. If x = 15 when y = 20, find x when y = 30.

Goryan [66]

Answer:

22.5

Step-by-step explanation:

y=kx

20=k15

k=1•33

30=1•33x

x=22•5

5 0

3 years ago

The table below shows two equations: Equation 1 |2x − 3| + 5 = 4 Equation 2 |5x + 3| − 10 = 3 Which statement is true about the

earnstyle [38]

Answer:

Equation 1 has no solution. Equation 2 does. The correct answer would be D.

8 0

4 years ago

are any two regular polygons similar. The area of the smaller figure is about 390 cm^2. choose the best estimate of the area of

galben [10]

Answer:

The best estimate of the area of the larger figure is $693\ cm^{2}$

Step-by-step explanation:

step 1

<em>Find the scale factor</em>

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

x-----> the corresponding side of the larger figure

y-----> the corresponding side of the smaller figure

$z=\frac{x}{y}$

we have

$x=12\ cm$

$y=9\ cm$

substitute

$z=\frac{12}{9}=\frac{4}{3}$ -----> the scale factor

step 2

<em>Find the area of the larger figure</em>

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z----> the scale factor

x-----> the area of the larger figure

y-----> the area of the smaller figure

$z^{2}=\frac{x}{y}$

we have

$z=\frac{4}{3}$

$y=390\ cm^{2}$

substitute and solve for x

$(\frac{4}{3})^{2}=\frac{x}{390}$

$(\frac{16}{9})=\frac{x}{390}$

$x=390*16/9=693.33\ cm^{2}$

4 0

3 years ago

1, 8, 27, 64 what are the next five numbers

Thepotemich [5.8K]

125, 216, 343, 512, 729

the numbers given in the sequence are recognisable as cubes

1 = 1³, 8 = 2³, 27 = 3³, 64 = 4³

the next five terms will be

5³ = 125, 6³ = 216, 7³ = 343, 8³ = 512 and 9³ = 729

6 0

4 years ago