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3 years ago

Am in dire need of help. Please help.

Mathematics

1 answer:

goblinko [34]3 years ago

5 0

Answer:

ED = 8

Step-by-step explanation:

6:9::x+4:2x+4 This is a proportion.

Set it up as 6/9 = x+4/2x+4

cross multiply which will get you 9x +36 = 12x + 24

subtract on each side to get 12 = 3x

divide 3x to get x = 4

then put into equation. (4) + 4 = 8

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Write two numbers so that

lana [24]

-5 and 2 would work.

5 0

4 years ago

9x+5=(x+3)what is the value of x

GenaCL600 [577]

Answer:

Step-by-step explanation:

4 0

3 years ago

Hi can anyone help me with question 1 and 3

lukranit [14]

Answer:

292 and 2092

Step-by-step explanation:

Surface area:

Wall 1: 40 x 3 = 120m^2

Wall2: 40 x 3 = 120m^2

Wall 3: 15 x 3 = 45m^2

Wall 4: 15 x 3 = 45m^2

Ceiling: 15 x 40 = 600m^2

Total : 240 + 600 + 90 = 730

So, cost of painting = 730/25 x 10 = 29.2 x 10 = 292

Total: 292 + 1800 = 2092

8 0

3 years ago

Can someone please help me on this question ASAP!! thank you. ' what are the coordinates of A & B? '

kati45 [8]

Answer:

First photo:

A: (2, 6)
B: (8, 4)

Second photo:

A: (0, 4)
B: (5, 0)

Third photo:

A: (8.5, 4)
B: (2.5, 1.5)

Fourth photo:

A: (4, 2)
B: (-2, 3)

Fifth photo:

A: (3, -5)
B: (-4, -1)

I hope this helps!

5 0

3 years ago

A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1+

egoroff_w [7]

Answer:

$a=\frac{3\times 7}{7}+\frac{12}{7}$ (First step for obtaining a common denominator for the two fraction)

$a=\frac{33}{7}\text{ m/s}^2$

Step-by-step explanation:

$\text{Given Expression: }a=a_1+\frac{F}{m}$

where,

a is acceleration of an object.(Need to calculate)

$a_1=3.00\text{ m/s}^2$

$F=12.0\text{ Kg.m/s}^2$

$m=7.00\text{ kg}$

$\text{Substitute }a_1, \text{ F, and m into expression and we get}$

$a=3+\frac{12}{7}$

Now we will simplify above expression for a

First we make common denominator.

Common denominator is 7. So, we make both denominator 7. We multiply by 7 at top and bottom with 3. We get

$a=\frac{3\times 7}{7}+\frac{12}{7}$ (First step for obtaining a common denominator for the two fraction)

Now we combine the numerator

$a=\frac{21+12}{7}$

$a=\frac{33}{7}\text{ m/s}^2$

3 0

4 years ago

Read 2 more answers