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4 years ago

-4/5(-8x+6)=1+7 Please Help

Mathematics

1 answer:

bagirrra123 [75]4 years ago

8 0

Answer:

x = 2

Step-by-step explanation:

-4/5(-8x + 6) = 1 + 7 (distribute first)

6.4x -4.8 = 8 (add 4.8 on both sides)

6.4x = 12.8 (divide by 6.4)

x = 2

PLUG IN

-4/5(-8(2) + 6) = 1 + 7

-4/5(-16 + 6) = 8

-4/5(-10) = 8

8 = 8

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PLS, HELP WILL GIVE BRAINLIEST, THANKS, AND 5 STAR RATING TO ANSWER SHOWING ALL WORK.

Harrizon [31]

Answer:

(a) ∠DAB = 59°

(b) ∠A = 135°

(c) ∠A = 99°

Step-by-step explanation:

<u>Theorem</u>: If a quadrilateral is inscribed inside a circle, then the opposite angles of the quadrilateral are SUPPLEMENTARY.

So, here in the given figures:

(1) ∠DCB + ∠DAB = 180° (as opposite angles are supplementary)

⇒∠DAB = 180° - 121° = 59°

or, ∠DAB = 59°

(2) ∠DCB + ∠DAB = 180° (as opposite angles are supplementary)

⇒(3x+6) + (x+2) = 180° or, 4x = 180 - 8 = 172

⇒ x = 172/4 = 43, or x = 43

So, ∠A = (3x+6) = 3(43) + 6 = 135°

(3) (28) + (x) = 180°

or, x = 180 - 28 = 152

So, ∠A = (x- 36) = 135 - 36 = 99°

(4)

5 0

3 years ago

Read 2 more answers

If A( 1,8) B(2,6) and C(4,2) are three points, show that AC=3AB

faust18 [17]

Answer:

see explanation

Step-by-step explanation:

Calculate AC and AB using the distance formula

d = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

with (x₁, y₁ ) = A(1,8) and (x₂, y₂ ) = C(4,2)

AC = $\sqrt{(4-1)^2+(2-8)^2}$

= $\sqrt{3^2+(-6)^2}$

= $\sqrt{9+36}$

= $\sqrt{45}$ = $\sqrt{9(5)}$ = 3 $\sqrt{5}$

Repeat with

(x₁, y₁ ) = A(1, 8) and (x₂, y₂ ) = B(2, 6)

AB = $\sqrt{(2-1)^2+(6-8)^2}$

= $\sqrt{1^2+(-2)^2}$

= $\sqrt{1+4}$

= $\sqrt{5}$

So AB = $\sqrt{5}$ and AC = 3 $\sqrt{5}$

Thus

AC = 3AB

5 0

3 years ago

Read 2 more answers

Mark transferred songs from his computer onto his portable music player. He transferred songs in minutes. How many songs did he

IgorLugansk [536]

Answer:

Need more info

Step-by-step explanation:

You're working with rates. It's relatively straight forward. Take miles per hour for instance. If you travel 60 miles in one hour, you're rate of speed is 60 miles per hour.

You haven't given any data in this example but the idea is the same. Let's say he transferred 10 songs in 5 minutes. That's means his rate is 10 songs per 5 minutes. You can change that to a fraction so it's easier to understand:

$\frac{10 songs}{5minutes}$