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2 years ago

Spiral Review. Find the value of the expression below

Mathematics

1 answer:

MakcuM [25]2 years ago

6 0

Answer:

399

Step-by-step explanation:

9+4^3*(20-8)/2+6

9+(4)(4)(4)(12)/2+6

9+64(12)/2+6

9+768/2+6

15+768/2

15+384

399

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Find the length of the line segment that connects the points (7, 16) and (47, 140)

tresset_1 [31]

Answer:

$length = \sqrt{ {(47 - 7)}^{2} + {(140 - 16)}^{2} } \\ = \sqrt{ {40}^{2} + {124}^{2} } \\ = \sqrt{16976} \\ = 130.29 \: units$

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2 years ago

208 rounded to the hundreds place

Serjik [45]

Answer:

200

Step-by-step explanation:

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2 years ago

DETERMINE THE VALUE OF X BASED ON THE IMAGE DOWN BELOW:

Andre45 [30]

The answer is 80! If you ever see any angle like that where it’s just two lines (I don’t know how to explain it/forgot what it’s called) it will be the same as the other angle.

5 0

2 years ago

Solve these..<br> 1. −4(n−5)=−62 <br> 2. 8−3t=25

White raven [17]

Answer:

1) n= 20.5

2) t= -17/3

Step-by-step explanation:

1) -4n + 20 = -62

-4n = -82

n = 20.5

2) -3t = 17

t = -17/3

6 0

2 years ago

Read 2 more answers

3. For the equation-4y = &r, what is the constant of variation? (1 point)<br> ООО<br> 02

alexandr1967 [171]

Answer:

3).

$- 4y = 8x \\ \frac{y}{x} = \frac{8}{ - 4} \\ \frac{y}{x} = - 2 \\ y = - 2x \\ hence \: constant \: is \: - 2$

4).

$y \alpha x \\ y = kx \\ where \: k \: is \: the \: constant \: of \: proportionality \\ when \: y = 24 \: and \: x = 8 \\ substitute \: in \: y = kx \\ 24 = 8k \\ k = \frac{24}{8} \\ k = 3 \\ value \: of \: constant = 3$

If it was by 10, k = 3 by 10

k = 30

5).

$general \: equation \: of \: line \\ y = mx + c \\ but \: m = \frac{2}{3} \: and \: c = 9 \\ substitute \: for \: m \: and \: c \: in \: y = mx + c \\ y = \frac{2}{3} x + 9 \\ alternatively \\ 3y = 2x + 27$

7 0

2 years ago