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3 years ago

Simplify.

1 answer:

6 0

16.3 - (-4.2) + 15.9

Subtracting (or multiplying) negatives makes them positive. So we rewrite:

16.3 + 4.2 + 15.9 = 36.4

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3) Which expression is equivalent to: 6(7-2) * O 67-62 O42-12 O 7-2 O 13 - 8

Vlad1618 [11]

Answer:

42-12

Step-by-step explanation:

Here you go mate

Step 1

6(7-2) Equation

Step 2

6(7-2) simplify

6x5

answer

42-12=30 check

4 0

3 years ago

Can someone answer this?

Tcecarenko [31]

340.8 cm^2.

72+72+72+62.4+62.4=340.8cm^2.

6 0

3 years ago

11th grade geometry:

Aliun [14]

Answer:

The perimeter is 72 units and the area is 149 square units.

Step-by-step explanation:

$\triangle SBA$ has coordinates $S(15,-8),B(-2,21)$ and $A(0,0)$

Using the distance formula.........

Length of side $SB = \sqrt{(15+2)^2+(-8-21)^2}= \sqrt{17^2+(-29)^2}= \sqrt{1130}$

Length of side $BA= \sqrt{(-2)^2+(21)^2}= \sqrt{445}$

Length of side $AS =\sqrt{(15)^2+(-8)^2}=\sqrt{289}=17$

So, the perimeter of the triangle will be: $(SB+BA+AS)= \sqrt{1130}+ \sqrt{445}+17 =71.71... \approx 72$ units. (Rounded to the nearest unit)

The height of the triangle for the corresponding base $SB$ is 8.89 units.

Formula for the Area of triangle, $A= \frac{1}{2}(base\times height)$

So, the area of the $\triangle SBA$ will be: $\frac{1}{2}(\sqrt{1130}\times 8.89)= 149.42... \approx 149$ square units. (Rounded to the nearest unit)

3 0

3 years ago

May I get help on these questions, please?

Virty [35]

Hello! here are the basic rules that you need to know to solve these problems:

a diameter is 2 × the radius
the circumference rule is 2×π×radius

I will solve the first question to show how to format.

1: 5/2=2.5
2×2.5×π=5×π=15.7

5 0

2 years ago

If y = -4 when x = 10, find y when x = 5

vesna_86 [32]

To find Y you must divide two by each side, making y=-2
- I hope this helps :)

3 0

3 years ago

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