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4 years ago

Question 10 help me pleas

Mathematics

2 answers:

Fudgin [204]4 years ago

4 0

11/16 i believe ! :)

charle [14.2K]4 years ago

3 0

The answer is 11/16 i think

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It cost Cai $1,80 to send 12 text messages, How much would it cost to send 90 text<br> messages?

Kipish [7]

Answer:

$13.5

Step-by-step explanation:

cost of 1 text message= $1.80÷12 =$0.15

cost of 90 messages = $0.15×90 = $13.5

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2 years ago

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Given the trinomial, what is the value of the coefficient B in the factored form? 2x2 + 4xy − 48y2 = 2(x + By)(x − 4y) −12 12 −6

Sonja [21]

Answer:

B is 6.

Step-by-step explanation:

We are trying to find a value for $B$ such that:

$2x^2+4xy-48y^2=2(x+By)(x-4y)$ is true for every $x,y$ .

So let's choose $x=0,y=1$ :

$2(0)^2+4(0)(1)-48(1)^2=2(0+B(1))(0-4(1))$

$2(0)+0-48=2(B)(-4)$

$0-48=-8B$

$-48=-8B$

Divide both sides by -8:

$\frac{-48}{-8}=B$

$6=B$

$B=6$

Note: I didn't want to choose y to be 0 because the value of B would disappear from the equation. So you should be able to have chosen any x and y except for y=0 to solve the equation for B.

Check:

So let's check and use foil to multiply out the right hand side.

$(x+6y)(x-4y)$

$x(x)+x(-4y)+6y(x)+6y(-4y)$

$x^2-4xy+6xy-24y^2$

$x^2+2xy-24y^2$

There was a 2 in front of that multplicapltiation:

$2(x+6y)(x-4y)$

$2(x^2+2xy-24y^2)$

$2x^2+4xy-48y^2$

This is exactly what we have on the left hand side of your given equation.

3 0

4 years ago

(PLEASE DO ASAP, I"LL GIVE BRAINLIEST)

Svetlanka [38]

Answer:

B and D

Step-by-step explanation:

first of all, b has nothing so that's automatically out. And it's given that 'ratio of a to b' so it has to be A to B not B to A because that's like saying ; 'which one is 1:2? 1:2 or 2:1?' (obviously 1:2). Hope that makes sense!

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3 years ago

Help I’ll give brainliest

Helga [31]

Answer:

30 minutes

Step-by-step explanation:

The hare and tortoise meet in 30 minutes at 240 feet.

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3 years ago

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For each diagram below, determine the value of, x if possible. If the triangles are congruent, a state which triangle congruence

Leto [7]

Answer:

The Triangles are congruent by Angle-Side-Angle.

x would equal 4 because the triangles are congruent.

Step-by-step explanation:

7 0

3 years ago