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3 years ago

Only number 7 and 8.Any help is appreciated.Thanks!

Mathematics

1 answer:

dmitriy555 [2]3 years ago

3 0

Number seven is d=yd and r=(yd)/2
8 is D=25.08 and r =12.54

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Leto [7]

Answer:

i got -2y + 3/2 x + 7/4

so I think is d

5 0

3 years ago

Factor completly 4x^2 +8x -5

DaniilM [7]

∑ Hey, jillianwagler ⊃

Answer:

$\left(2x-1\right)\left(2x+5\right)$

Step-by-step explanation:

║Given info║:

Factor completely: $4x^2 +8x -5$

Solution~:

Breaking the expression~: $\left(4x^2-2x\right)+\left(10x-5\right)$

Factor out 2x from 4x² -2x : 2x(2x-1)

Factor out 5 from 10x - 5 : 5(2x - 1)

Put together: $=2x\left(2x-1\right)+5\left(2x-1\right)$

Factor out 2x - 1: $=\left(2x-1\right)\left(2x+5\right)$

xcookiex12

8/19/2022

4 0

2 years ago

If a/b = c/d, then ad = bc.

Nikolay [14]

Answer:

The statement is true

see the explanation

Step-by-step explanation:

we have the proportion

$\frac{a}{b}=\frac{c}{d}$

we know that

To solve the proportion multiply in cross

$(a)(d)=(b)(c)$

$ad=bc$

therefore

The statement is true

7 0

4 years ago

2.) Is (-1, 2) a solution to this system of equations? 1-x+2y = 3 12x - y - 4

gizmo_the_mogwai [7]

Answer:

12x-y-4

Step-by-step explanation:

3 0

3 years ago

-40+2n=4n-8n+8 EXPLAIN IN NUMBER FORM AND NO WORDS

marin [14]

Answer:

−40+2n=−4n+8

−40+2n+40=−4n+8+40

2n=−4n+48

2n+4n=−4n+48+4n

6n=48

answer: n=8

Step-by-step explanation:

8 0

3 years ago