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3 years ago

-7X (-4) ÷ 14 - 2² can someone help me find this answer??? Thank you

Mathematics

1 answer:

Galina-37 [17]3 years ago

8 0

Answer:

P. -7x multiplied by -4= 28x

E. 28x ÷ 14 - 4

E/D 28x ÷ 14 = 2x

A/S 2x - 4 or -2x

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60% of a rectangular garden measuring 3 by 6 is covered by snow. What area of the garden is not covered by snow?

ololo11 [35]

7.2 or 7 1/5 i believe

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2 years ago

What is the area of a sector with a central angle of 255 and a radius of 18.4 m?

Igoryamba

Answer:

The answer is 753.01 m².

Step-by-step explanation:

Given that the formula of sector is θ/360×π×r² where r represents radius of circle. Then, you have to substitute the values into the formula :

$area = \frac{θ}{360} \times \pi \times {r}^{2}$

Let θ = 255°

Let π = 3.14,

Let r = 18.4m,

$area = \frac{255}{360} \times 3.14 \times {18.4}^{2}$

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2 years ago

Quadratic Equation

Natasha_Volkova [10]

Step-by-step explanation:

The sum of ages of two friends is 13 years.

The product of their ages is 42.

Let the age of 1st friend and 2nd friend is x, y respectively.

1 st condition= The sum of ages of two friends is 13 yrs.

i.e x+y = 13........ (I)

2nd condition= The product of their ages is 42.

i.e X*y = 42........(ii)

From equation (I)

X+y = 13

or, X = 13-y........ (iii)

Putting the equation (iii) in equation (ii).

X*y= 42

(13-y) * y = 42

13y - y^2 = 42

${y}^{2} - 13y + 42 = 0$

${y}^{2} - (7 + 6)y + 42= 0$

${y}^{2} - 7y - 6y + 42 = 0$

$y(y - 7) - 6(y - 7) = 0$

$(y - 6) (y - 7) = 0$

Either; y-6 = 0

y = 6

Or;

y-7=0

y = 7

Keeping the value of y as "7" in equation (ii)

x*y = 42

7x = 42

X = 42/7

Therefore, the value of X is 6.

Therefore, either 1st friend is 6 years and 2nd is 7 years.

Hope it helps...

7 0

2 years ago

Sasha bought three pens malachi bought one how much more money did sasha spend then malachi

Nuetrik [128]

If the cost of one pen is x, the Sasha spend 3x, and Malachi spent 1x.

Sahsa spend 3x - 1x more than Malachi. So, Sasha spent 2x more than Malchi did for a pen.

Just plug in how much a pen costs into x to fi d the numerical answer. :)

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3 years ago

What is 1.4% of b? What is 8% of x?

Nikolay [14]

Answer:

Step-by-step explanation:

1.4% of b = $\frac{1.4}{100}*b = 0.014b$

8% of x = $\frac{8}{100}*x = 0.08x$

4 0

2 years ago

-7X (-4) ÷ 14 - 2² can someone help me find this answer??? Thank you ​

-7X (-4) ÷ 14 - 2² can someone help me find this answer??? Thank you