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tresset_1 [31]
3 years ago
10

Needs help with algebra ​

Mathematics
1 answer:
Maslowich3 years ago
6 0

Answer:

4 {a}^{2}  + 5b = 9b - 7c

=> 4 {a}^{2}  + 7c = 9b - 5b

=>  \frac{4 {a}^{2} + 7c }{4}  = b

option C

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Caleb purchases 5 beach towels for d dollars each. Each towel is charged an additional 6% sales tax.
Assoli18 [71]
The correct expressions are:
5.3d
5d+0.3d
5(d+0.06d)

Since he is purchasing 5 towels that have a cost of d dollars each, the cost of the towels is given by 5d.

However, to add 6% tax, we multiply this by 0.06 and add it to the price without tax:
5d+0.06(5d)

Simplifying this, we have 5d+0.3d = 5.3d.

All of the correct answers simplify to this expression.
6 0
3 years ago
Please help:
suter [353]

Answer:

A. 14:8 or 7:4

B. 14:6 or 7:3

C. 6:8 or 3:4

D. 6:28 or 3:14

Step-by-step explanation:

All you have to do is put the numbers in order and sometimes you can simplify it. It's pretty self-explanatory.

Hope this helps :)

5 0
3 years ago
Today, 4 cows produced 26 gallons of milk. If each cow produced the same amount of milk, how many gallons of milk did each cow p
viktelen [127]
4/4 = 1 cow

26/4 = 6.5 gallons each
7 0
3 years ago
Read 2 more answers
Please help me :) please
dangina [55]

Answer:

In bold.

Step-by-step explanation:

6/6 = 9/a

So a = 9.

6/c = a/4.5

6/c = 9/4.5 = 2

So c = 3.

By similar triangles:

d/5 = 6/ (6+6+3)

d/5 = 6/15 = 2/5

So d = 2.

Also by similar triangles

b/5 = 12/15 = 4/5

So b = 4.

8 0
2 years ago
A french class has a total of 25 student.The number of males is 7 more than the number of females how many males and how many fe
Lady_Fox [76]

Answer:

16 males and 9 females

Step-by-step explanation:

To solve this we can use a system of equations.

Let's start by naming the number of females x.

The number of males would then be y.

<u>Using these variables, we can set up 2 equations using info provided:</u>

A french class has a total of 25 students, -> x+y=25

The number of males is 7 more than the number of females -> x+7=y

Use substitution to solve.

<u>From the second equation:</u>

x+7=y

Subtract 7 from both sides.

x=y-7

Substitute that into the first equation.

x+y=25

y-7+y=25

Combine like terms.

2y-7=25

Add 7 to both sides.

2y=32

Divide both sides by 2.

y=16

Substitute y=16 into equation 2.

x+7=y

x+7=16

Subtract 7 from both sides.

x=9

Therefore, there are 16 males and 9 females in the french class.

3 0
2 years ago
Read 2 more answers
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