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2 years ago

What is the value of x when 10(x + 2) = 5(x + 8)

Mathematics

2 answers:

ozzi2 years ago

7 0

The answer is x=4. you have to use the distributive property on both sides then begin solving for x.

LiRa [457]2 years ago

3 0

Use the distributive property to get 10x+20=5x+40. Subtract 5x from both sides to get 5x+20=40. Subtract 20 from both sides to get 5x=20. Divide 5 from both sides to get x=4.

x=4

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An oil drilling company is drilling a hole. The elevation of the bottom of the hole changes by feet each day. After a certain nu

marin [14]

Answer:

option.D

Step-by-step explanation:

each day it changes by $-73\frac{1}{4}$

so for two days , the elevation becomes $-73\frac{1}{4}$ + $-73\frac{1}{4}$

for 3 days : $-73\frac{1}{4}$ + $-73\frac{1}{4}$ + $-73\frac{1}{4}$

so, for n days, $-73\frac{1}{4}$ + ........ n times

= n* $-73\frac{1}{4}$

therefore, for x days, elevation = x* $-73\frac{1}{4}$

as it is given that after certain days this elevation has reached $-366\frac{1}{4}$

so, x* $-73\frac{1}{4}$ = $-366\frac{1}{4}$

3 0

3 years ago

A 92 ft path cuts diagonally from Mateo St. to Cove St. It makes an angle of 68° with Cove St. and an angle of 34° with Mateo St

ohaa [14]

Answer:

41.802 feet

Step-by-step explanation:

Given that a 92 ft path cuts diagonally from Mateo St. to Cove St. It makes an angle of 68° with Cove St. and an angle of 34° with Mateo St.

We can visualize a triangle formed by the three streets One side is 92 feet.

Angle opposite 92 feet = $180-68-34 = 78$

Let x be length of Cove st and y length of Mateo st.

Using sine angle for triangles,

$\frac{92}{sin 78} =\frac{x}{sin 34} =\frac{y}{sin 68}$

Simplify to get

x=52.595

y=87.207

Distance saved= $x+y-92\\= 139.802-92\\=41.802$

7 0

3 years ago

Read 2 more answers

What is the value of x, when 5+x+(−2)=−8?

nasty-shy [4]

3 0

3 years ago

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Suppose a house has a floor area of 2,250 square feet. what is this area in units of square centimeters?

Natali [406]

1 feet = 30.5 centimetres

1 feet² = (30.5)² centimetres²

2250 feet² = 2250 × 30.5² = 2093062.5 centimeters²

3 0

3 years ago

What is the area of this parallelogram? PLEASE HELP

zimovet [89]

Answer:

Step-by-step explanation:

the area of a parallelogram is the length of one of the sides multiplied with the length of the height on this side.

so, in this case it is

4×5 = 20 cm²

5 0

2 years ago