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3 years ago

Hey I need help with this maths question

Mathematics

2 answers:

irinina [24]3 years ago

8 0

Answer:

X=4

Step-by-step explanation:

2X - 10 = -2

2X = 8

X = 8/2

X = 4

Best regards

Brut [27]3 years ago

8 0

Answer:

x=4

Step-by-step explanation:

2x-10= -2

add 10 to -2

which makes it 2x= 8

then divide by 2

x=4

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-.27(x-2.9t)^2+2.56 in standard form?<br> Please provide steps. Thank you!

kirill [66]

Answer:

$-\frac{27(-\frac{20t}{10}+x)^{n} }{50} +2.56$

Step-by-step explanation:

6 0

2 years ago

What is 7/8 divided by 2/8

allsm [11]

Answer:

3.5

Step-by-step explanation:

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3 years ago

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A problem states: "There are 5 more girls than boys at the party. There are 27 children at the party in all. How many boys are t

Sever21 [200]

As there is 5 more girls than boys and b is the number of boys, the expression b + 5 represents the number of girls.
total there are 27 childrens
b + (b+5) = 27
b + b + 5 = 27
2b = 27 -5
b =22 / 2
b =11
so the number of boys there are 11 and girls are 11 + 5 = 16
and total is 16 + 11 = 27

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3 years ago

a rectangular pool has an area of 640 square feet. the is 12 feet shorter than the width. the length of the pool is feet and the

Ray Of Light [21]

Given:

Area of rectangular pool = 640 square feet

The length is 12 feet shorter than the width.

To find:

The length and width of the pool.

Solution:

Let width of the pool = x feet

Then, Length of the pool = (x-12) feet

Area of a rectangle is

$Area=length\times width$

$Area=(x-12)\times x$

Area of pool is 640 square feet. So,

$(x-12)x=640$

$x^2-12x-640=0$

Splitting the middle term, we get

$x^2-32x+20x-640=0$

$x(x-32)+20(x-32)=0$

$(x+20)(x-32)=0$

Using zero product property, we get

$x=-20,32$

Dimensions cannot be negative. So, x=32.

Now,

Width of the pool = 32 feet

Length of the pool = 32-12 = 20 feet

Therefore, the length of the pool is 20 feet and width is 32 feet.

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3 years ago

The Great Pyramid in Giza, Egypt, is a square pyramid. The dimensions of the pyramid at the time of its completion are shown in

gayaneshka [121]

First you would find the area of the square:
230*230= 52,900
Next you would find the area of one on the triangles:
230*187=43,010 * 1/2= 21,505
Then you would multiply the area of the one triangle by four:
21,505*4= 86,020
Finally, you would add the area of the square to the combined area of the triangles:
86,020+ 52,900=138,920

4 0

3 years ago

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