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2 years ago

Rewrite to solve for y 12y+d=-19y+t

Mathematics

2 answers:

ella [17]2 years ago

6 0

When we say to solve for something

⇒ essentially move everything to one side

⇒ and that 'something' to the other

In this case:

⇒ we need to move the y-variable by itself to one side

⇒ and everything else to the other

Let's apply that principle:

$12y+d=-19y+t\\12y+19y=t-d\\31y=t-d\\y=\frac{t-d}{31}$

Answer: (t-d) / 31

Hope that helps!

#LearnwithBrainly

Katyanochek1 [597]2 years ago

4 0

Answer:

this right here

Step-by-step explanation:

31y=t-d

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Brandi earned $7 babysitting and $12 cleaning

worty [1.4K]

I’m pretty sure it will be 7+12 and 12+7

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3 years ago

Read 2 more answers

I’m lost please help

vagabundo [1.1K]

Answer:

See proof below

Step-by-step explanation:

Two triangles are said to be congruent if one of the 4 following rules is valid

The three sides are equal
The three angles are equal
Two angles are the same and a corresponding side is the same
Two sides are equal and the angle between the two sides is equal

Let's consider the two triangles ΔABC and ΔAED.

ΔABC sides are AB, BC and AC

ΔAED sides are AD, AE and ED

We have AE = AC and EB = CD

So AE + EB = AC + CD

But AE + EB = AB and AC+CD = AD

We have

AB of ΔABC = AD of ΔAED

AC of ΔABC = AE of ΔAED

Thus two sides the these two triangles. In order to prove that the triangles are congruent by rule 4, we have to prove that the angle between the sides is also equal. We see that the common angle is ∡BAC = ∡EAC

So triangles ΔABC and ΔAED are congruent

That means all 3 sides of these triangles are equal as well as all the angles

Since BC is the third side of ΔABC and ED the third side of ΔAED, it follows that

BC = ED Proved

5 0

2 years ago

Cassie leaves Escanaba at 8:30 AM heading for Marquette on her bike. She bikes at a uniform rate of 12 miles per hour. Brian lea

exis [7]

Answer:

(D) 11: 00

Step-by-step explanation:

We have been given that Cassie leaves Escanaba at 8:30 AM heading for Marquette on her bike. Brian leaves Marquette at 9:00 AM heading for Escanaba on his bike.

This means that Cassie leaves 1/2 hour before Brian.

Since Cassie bikes at a uniform rate of 12 miles per hour, so distance covered in half hour would be half of 12 miles that is 6 miles.

Since total distance is 62 miles, so distance left between both at 9:00 Am would be $62-6=56$ .

We are told that Brian bikes at a uniform rate of 16 miles per hour and Cassie bikes at a uniform rate of 12 miles per hour, so distance traveled by both in one hour would be $16+12=28$ miles.

Let us divide 56 by 28 to find time taken to complete 56 miles.

$\frac{56}{28}=2$ .

Since it will take them 2 hours to cover 56 miles, therefore, they will meet 2 hours after 9:00 AM that is 11:00 AM.

3 0

4 years ago

Find the number of students who like both peanut butter and jam. *

netineya [11]

Answer:

4 students

Step-by-step explanation:

As shown in the diagram, let U=[The total number of students questioned]

$\implies n(U) = 10$

A=[Those who liked peanut butter ]

$\implies n(A) =18$

B=[Those who liked jam ]

$\implies n(B) = 10$

x = those who like both peanut butter and jam.

Also 6 liked neither peanut butter nor jam.

From the diagram we can write the mathematical equation as follow and solve for x

$30 = 18 - x + x + 10 - x + 6$

$\implies 30 = 34- x$

We add x and subtract 30 to both sides.

$\implies 30 - 30 + x = 34- x + x - 30$

$\implies x = 4$

Therefore 4 students like both peanut butter and jam.

6 0

3 years ago

A two digit number is such that the product of the digit is 35 when 18 is added to the number the digits change their places . F

Digiron [165]

Consider the number xy where:

xy = 10 . x + y

x . y = 35

xy + 18 = yx

10.x + y + 18 = 10.y + x

10.x - x = 10.y - y - 18

9.x = 9.y - 18

x = y - 2

(y - 2) . y = 35

y^2 - 2y - 35 = 0

Using the Bhaskara formula:

y = 7 (the negative solution is discarded)

x = 7 - 2

x = 5

Response: the xy number is 57.

;-)

6 0

3 years ago