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2 years ago

Can somebody plz help me

Mathematics

1 answer:

Kazeer [188]2 years ago

7 0

So original is 2x+5=19
We will subtract -5 from both sides
Now it's 2x=14
We will then divide by 2
Now the final answer x=7

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Jayden evaluated the expression a ÷ (2 + 1.5) for a = 14. He said that the value of the expression was 8.5. Select all the state

Darina [25.2K]

Answer:

C) Jayden divided 14 by 2 and then added 1.5.

Step-by-step explanation:

Jayden did

(14/2)+1.5 which is 8.5

so C is correct.

Hope this helps plz hit the crown :D

6 0

2 years ago

Three is 7 more than one-fifth of a number.

Paha777 [63]

Answer:

3=1/5x+7

Step-by-step explanation:

when it says "Of a number" it means to add a variable, so i added a x. and when it says "more than" it means to add, so 3=1/5x+7 is the answer

5 0

2 years ago

Which equation is the inverse of y = 16x2 + 1?

Llana [10]

Answer:

$y=\frac{\sqrt{x-1} }{4}$

Step-by-step explanation:

The given equation is

$y=16x^2+1$

For this function to have an inverse, we must restrict the domain, say $x\ge0$

We interchange x and y to get,

$x=16y^2+1$

We now make y the subject to get;

$x-1=16y^2$

We divide through by 16 to get;

$\frac{x-1}{16}=y^2$

We now take the square root of both sides to get;

$\pm \sqrt{\frac{x-1}{16}}=y$

$y=\pm \frac{\sqrt{x-1} }{4}$

Since $x\ge 0$ , the inverse function is

$y=\frac{\sqrt{x-1} }{4}$

6 0

3 years ago

Help!!!i never learned this

andre [41]

I hope this helps you

perpendicular lines slopes multiplication -1

M1×M2= -1

1/2×M2= -1

M2= -2

5 0

3 years ago

Rosie washes clothes for two families the first family pays her $500 more per month than the second. Her total earning per month

disa [49]

Answer:

Family 1: $1.850
Family 2: $1.350

Step-by-step explanation:

We know that the total monthly payment is 3200, so if we call Pa (family A`s payment) and Pb (Family B's payment) the payments:

Pa+Pb=3200
also, Pa = Pb+500

So if we replace Pa in the first ecuation:

Pb+500+Pb=3200
2Pb= 3200-500
Pb=2700/2= $1.350

then Pa+Pb=3200 => Pa= 3200-1350= $1.850

Good Luck!

8 0

2 years ago