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3 years ago

Need help to solve please

Mathematics

1 answer:

Ganezh [65]3 years ago

7 0

Answer:

Llo nose swim is the trail in the foot ball on the ground and the feet on the sides of the ground and the water in the water and the war is in the water and the water and water in

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Evaluate the expression for x = 3 :11 + (8 - x)2 - 20

hammer [34]

Answer:

Step-by-step explanation:

Step 1: Plug in

11 + (8 - 1)2 - 20

Step 2: Parenthesis

11 + 7(2) - 20

Step 3: Multiply

11 + 14 - 20

Step 4: Combine like terms

6 0

3 years ago

In triangle ABC, angle A is congruent to angle C, AB= 10x-7, BC= 2x+33 And AC= 4x-6. Find x

Zina [86]

Since <A is congruent to <C , so triangle ABC is an isoceles triangle and side AB is congruent to BC.

AB = BC

Therefore, we can set up an equation as following:

10x - 7 = 2x + 33

10x - 7 - 2x = 2x + 33 -2x Subtracting 2x from each sides.

8x -7 = 33

8x - 7 + 7 = 33 + 7 Add 7 to each sides.

8x = 40

$\frac{8x}{8} =\frac{40}{8}$ Divide each sides by 40.

So, x = 5

6 0

4 years ago

Make m the subject of the formula m/v - t/b = m-t/r

RoseWind [281]

Answer:

$m = - \frac{ \frac{t}{b} + \frac{t}{r} }{1 - \frac{1}{v} }$

Step-by-step explanation:

$\frac{m}{v} - \frac{t}{b} = m - \frac{t}{r} \\ \frac{m}{v} - \frac{t}{b} + \frac{t}{r} = m \\ - \frac{t}{b} + \frac{t}{r} = m - \frac{m}{v} \\ - \frac{t}{b} + \frac{t}{r} = m(1 - \frac{1}{v} ) \\ - \frac{t}{b} + \frac{t}{r} = \frac{m( 1 - \frac{1}{v}) }{(1 - \frac{1}{v}) } \\ - \frac{ \frac{t}{b} + \frac{t}{r} }{1 - ( \frac{1}{v} ) } = m$

3 0

3 years ago

A contractor has at most $42 to spend on nails for a project. Finishing nails cost $0.45 per pound and

lara [203]

Answer:

Step-by-step explanation:

f(x)=42-0.45(x) Solution 13.5 dollars expend in 30 Finishing nails

f(x)=42-0.60(x) Solution 18 dollars expend in 30 Common nails

4 0

3 years ago

Twice the difference of a number and seven

levacccp [35]

The difference of a number and seven is x - 7. So twice that, would be:

2(x - 7)

4 0

3 years ago