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lorasvet [3.4K]
3 years ago
12

Please help me to get correct answer

Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer:

1. Because a right angle is 90 degrees, the answer to this is 90 - 65 = 25.

2. This question is similar to the last one, but this time the angle is 180 degrees total, so the answer is 180 - 55 = 125.

3. I'm fairly certain the lines here indicate that all three angles are the same. If all three angles make 180 degrees, the answer would be 180 / 3 = 60.

4. This is the same as in question 2. 180 - 135 = 45.

5. Again, because all three angles need to make up 180 degrees, we can just simply do 180 - (65 + 45) = 70.

6. With a quadrilateral, the angles add up to 360 degrees. We can do the same thing as in question 5 here. 360 - (70 + 95 + 55) = 140.

7. I don't remember exactly how to solve this but 55 degrees is correct because 55 + 55 + 70 = 180 which is the only possible value.

I haven't done this kind of stuff in a looooong time so I hope this suffices! :)

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Answer these questions.<br> 45% of 40 is 18% of what number?
Furkat [3]

Answer:

45% of 40 is 18% of <em>100</em>

Step-by-step explanation:

Let 45% of 40 = 18% of <em>x</em> .

Taking LHS (Left Hand Side):

45% of 40

\Rightarrow \dfrac{45}{100} \times 40\\\Rightarrow \dfrac{1800}{100}\\\Rightarrow 18 ...... (1)

Taking RHS(Right Hand Side):

18% of x

\Rightarrow \dfrac{18}{100} \times x\\\Rightarrow 0.18 \times x ...... (2)

Equating (1) and (2):

18 = 0.18 \times x\\\Rightarrow x= \dfrac{1800}{18}\\\Rightarrow x = 100

Hence, 45% of 40 is 18% of <em>100.</em>

8 0
3 years ago
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jeka94

Answer: It's the first option

Step-by-step explanation: positive 2x because it is going up 2, 1 to the right (rise/run) and +5 because it touches the y-axis at 5. -2x because it's going down 2, 1 right (rise, in this case negative/run) and -2 because it touches the y-axis at -2.

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AlladinOne [14]

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Step-by-step explanation:

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2 years ago
What is the equation of the line that passes<br> through the points (3,-1) and (7, 3)?
exis [7]

Answer: y = 1x + -4

Equation of a straight line:

y = mx + b ------(i)

Step by Step Solution:

Step 1: Calculating Slope (m).

m = y2-y1 /x2-x1

m = 3--1 /7-3

m = 4/4

m = 1

Now putting value of m in equation (i)

y = 1x + b -----(ii)

Step 2: Calculating Y-intercept (b).

Lets choose the first point, (3,-1) for calculating y-intercept:

y = mx + b

-1 = 1(3) + b

-1 = 3 + b

-4 = b

b = -4

Now putting value of b in equation (ii)

y = 1x + -4

4 0
2 years ago
Alees and Emma design an office park in 28 weeks. Each architect spends 19 hours each week on this project. What is the total nu
olchik [2.2K]

Alees and Emma spend 1064 hours together

<em><u>Solution:</u></em>

Given that, Alees and Emma design an office park in 28 weeks

Each architect spends 19 hours each week on this project

To find: Total number of hours the architects work on this project

From given,

Total number of weeks = 28

Each architect spends 19 hours each week

Therefore,

Time spent in one week by Alees = 19 hours

Time spent in one week by Emma = 19 hours

<em><u>Total number of hours the architects work on this project</u></em>

Total\ number\ of\ hours = (19 \times 28) + (19 \times 28)\\\\Total\ number\ of\ hours = 532 + 532\\\\Total\ number\ of\ hours = 1064

Thus, they spend 1064 hours together

7 0
4 years ago
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