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4 years ago

2{ 2[24 + 4(23 - 14) - 25]}

Mathematics

1 answer:

andreyandreev [35.5K]4 years ago

5 0

Answer:

140

Step-by-step explanation:

2{ 2[24 + 4(9)-25]}

2{ 2[24 + 36-25]}

2{ 2[35]}

2(70)

140

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I need help I don’t understand any of thisl

Natalija [7]

Note! Every triangle must add up to 360°

1. x =
(×+29°) + (x+19°) + 84° = 360°
x + x + 29° + 19° + 84°= 360°
2x + 48° + 84°= 360°
2x + 132° = 360°
2x = 228°
x = 114°

m(angle)A =
(x+29°)
(114°+29°)=143°

m(angle)B=
(x+19°)
(114°+19°)=133°

3. is a bit different

(3x+6)° = (8x+3)°+130°
-5x+6° = 3° + 130°
-5x = 133° - 6°
-5x = 127°
x = -25.4°

m(angle)A=
(3x+6)°
3×(-25.4)+6= -70.2°

m(angle)DBE=
(8x+3)°=
8(-25.4)+3= -200.2°

I only did 1. and 3. for examples now, but if you need help with anymore just ask!

7 0

3 years ago

What value of c makes the polynomial below a perfect square?

ira [324]

The value for c is A. 49. That comes from the process of completing the square where you take half the linear term, square it, and add it in. Our linear term is 14. Half of 14 is 7, and 7 squared is 49. So A

6 0

3 years ago

Which of the following values is farthest to the left on the number line

larisa86 [58]

There's no picture, so im not for sure on this answer. But if its a full number line and the numbers are positive, its usually the least numbers, but the LOWEST numbers on the number line are negatives.

5 0

4 years ago

Pls help ill give brainly

marin [14]

The slope of this straight line is equal to: A. 2

<h3>What is a slope?</h3>

A slope is also referred to as gradient and it's typically used to describe both the direction, ratio, and steepness of the function of a straight line based on its coordinates or points.

<h3>How to calculate the slope of a line?</h3>

Mathematically, the slope of any straight line can be calculated by using this formula;

$Slope = \frac{Change\;in\;y\;axis}{Change\;in\;x\;axis}\\\\Slope = \frac{y_2\;-\;y_1}{x_2\;-\;x_1}$

By critically observing the given graph, we can logically deduce the following points:

Point (x, y) = (1, 1)
Point (x, y) = (-1, -3)

<u>Note:</u> Each interval on this graph represents 1 unit.

Substituting the given points into the formula, we have;

Slope = Δy/Δx

Slope = (-3 - 1)/(-1 - 1)

Slope = -4/-2

Slope = 2

Read more on slope here: brainly.com/question/3493733

#SPJ1

5 0

2 years ago

Jim invested $4000 in two accounts. The first account paid 10% interest. the second account paid 2% interest. At end of the year

Darina [25.2K]

Answer: the amounts are $1400 and $2600

Step-by-step explanation:

Let x represent the amount in the first account.

Let y represent the amount in the second account.

Jim invested $4000 in two accounts. It means that

x + y = 4000

The interest on the amount invested is simple interest. The formula for simple interest is expressed as

I = PRT/100

Where

I is the interest

P is the principal or initial amount

R is the interest rate

T is the time

Considering the first account,

P = x

R = 10%

T = 1

I = (x × 10 × 1 )/100 = 10/100 = 0.1x

Considering the second account

P= y

R = 2%

T = 1

I = (y × 2 × 1)/100 = 0.02y

At end of the year, he had earned $192 in interest. It means that

0.1x + 0.02y = 192 - - - - - - -1

Substituting x = 4000 - y into equation 1, it becomes

0.1(4000 - y) + 0.02y = 192

400 - 0.1y + 0.02y = 192

- 0.1y + 0.02y = 192 - 400

-0.08y = -208

y = -208/0.08 = $2600

x = 4000 - y

x = 4000 - 2600 = $1400

8 0

3 years ago