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3 years ago

HELP

Mathematics

1 answer:

RideAnS [48]3 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

Under a reflection in the y- axis

a point (x, y ) → (- x, y ) , then

T (3, 5 ) → T' (- 3, 5 )

U (4, 3 ) → U' (- 4, 3 )

V (1, 2 ) → V' (- 1, 2 )

Plot T', U', V' and connect them in order

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Please help for #10 both parts will give 30 points!!!!!

Andreas93 [3]

8x6= 48 (not necessary to divide by 8 since you'd have to multiply it by 2 anyway because there are 2 triangles)
6x12=72
10x12=120
12x8=96

48+72+120+96=336

336cm^2 is the answer

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3 years ago

Solve: 3^x+1 + 3^x= 108

mash [69]

Answer:

x = 3

Step-by-step explanation:

${3}^{(x + 1)} + {3}^{x} = 108 \\ \\ {3}^{x} .3 + {3}^{x} = 108 \\ \\ {3}^{x} (3 + 1) = 108 \\ \\ {3}^{x} (4 )= 108 \\ \\ {3}^{x} = \frac{108}{4} \\ \\ {3}^{x} = 27 \\ \\ {3}^{x} = {3}^{3} \\ \\ \implies x = 3$

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3 years ago

Find the area of the triangles round to the tenth. Show steps please!

amm1812

Answer:

$\large\boxed{A=89.6}$

Step-by-step explanation:

It's the right triangle. The formula of an area of a right triangle:

$A=\dfrac{leg\cdit leg}{2}$

We have:

$leg=x\\leg=16\\\text{and the angle}\ \alpha=55^o$

Use tangent:

$tangent=\dfrac{opposite}{adjacent}$

$opposite=16,\ adjacent=x$

$\tan55^o\approx1.4281$

Substitute:

$\dfrac{16}{x}=1.4281$ convert the decimal to the fraction

$\dfrac{16}{x}=\dfrac{14281}{10000}$ cross multiply

$14281x=160000$ divide both sides by 14281

$x=\dfrac{160000}{14281}$

$x\approx11.2$

Calculate the area:

$A=\dfrac{(16)(11.2)}{2}=89.6$

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3 years ago

The McIntosh family went apple picking. They picked a total of 115 apples. The family

Tju [1.3M]

Answer:

The solution is 12. The equation is (115 - 19) ÷ 8.

Step-by-step explanation:

We can solve this problem by using division.

First, let's take away 19.

115 - 19 = 96

Now let's divide 96 by 8.

96 ÷ 8 = 12.

And we have 12, our answer.

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4 years ago

Which property is represented by the statement 33 + 87 = 87 + 33?

Snezhnost [94]

Answer:

Step-by-step explanation:

The commutative property of addition states changing the order of the numbers doesn't not change the sum. The order changed but the numbers stayed the same and as a result the same.

6 0

3 years ago

Read 2 more answers