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2 years ago

Solve the proportion for x.

Mathematics

1 answer:

Delvig [45]2 years ago

5 0

$\frac{x}{8} = \frac{8}{64} \\ 64x = 8 \times 8 \\ 64x = 64 \\ x = \frac{64}{64} \\ \boxed{x = 1}$

Proportion for x is 1.
Use cross multiplication.

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A line has a slope of -4/5. Which ordered pairs could be points on a line that is perpendicular to this line?

11Alexandr11 [23.1K]

Answer:

(5,4) & (8,-10)

Step-by-step explanation:

First step:

$y=mx+b$

You can use any number you want for b (I used 4)

$y=-\frac{4}{5} x+4$

Make x=0

$y=-\frac{4}{5} (0)+4$

$y=4$

Make y=0

$0=-\frac{4}{5} x+4$

Subtract 4 from both sides

$-4=-\frac{4}{5} x$

Divide both sides by $-\frac{4}{5}$

$x=5$

Second step:

In order to make a line perpendicular to another the slope of the second line will be the negative inverse of the first line. So $m=-\frac{4}{5}$ will be $m=\frac{5}{4}$ for the second line.

Then you just need to repeat the process in first step to get the intercepts. (Again I used a random number like -10 for b)

8 0

3 years ago

8(nb)^0 simplify please

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

$\huge \: 8 {(nb)}^{0} \\ \huge= 8 {n}^{0} {b}^{0} \\ \huge= 8 \times 1 \times 1 \\ \huge = 8 \\$

3 0

3 years ago

Analyze relationships: The area of the shaded triangle is 5x^2 + 3x - 4. What is the area of the entire figure?

blagie [28]

well, we know the shaded region has an area of 5x²+3x-4, there are three more sections of equal shape, so their areas must also be equal, meaning there are four regions of the same area of 5x²+3x-4, thus 4(5x²+3x-4) = 20x²+12x-16.

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4 years ago

All rectangles are quadrilaterals. TrueFalse

mariarad [96]

Answer:

yep

Step-by-step explanation:

yes always

5 0

3 years ago

Read 2 more answers

A. 90 B. 105 C. 225 D. 315

Simora [160]

Answer:

225 is the correct one

Step-by-step explanation:

u multiply 15m*9 months u get 135 and then u add the existing 90m and then it becomes 225mp3

15m*9+90

7 0

3 years ago