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3 years ago

Answer the following 3 questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!

Mathematics

2 answers:

Readme [11.4K]3 years ago

7 0

1. 7 - 6 ÷ 3

= 7 - 2

= 5

Answer: A) 5

2. (2 x 4) + 6 ÷ 2

= 8 + 6 / 2

= 8 + 3

= 11

Answer: A) 11

3. What is the coefficient in the expression 40a - 61 = 17?

Answer: D) 40a

Hope This Helps :)

zhannawk [14.2K]3 years ago

6 0

1. A) 5

7 - 6 ÷ 3

7 - 2

2. A) 11

(2 x 4) + 6 ÷ 2

8 + 6 ÷ 2

8 + 3

3. A) 40

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Whats 1+1 Plz help enjoy the points hehe

AleksandrR [38]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Write and solve an equation to find the value of x and a missing angle in the triangle below.

Arturiano [62]

Answer:

x = 27°, ∠JLK = 55°

Step-by-step explanation:

From the diagram in the question above,

The exterior angle of a triangle is equal to the sum of the two opposite side

3x+13 = 39+(2x+1)

3x+13 = 40+2x

collect like terms and solve for x

3x-2x = 40-13

x = 27°.

∠JKL = 2x+1

Substitute the value of x

∠JKL = 2(27)+1

∠JKL = 54+1

∠JKL = 55°

5 0

2 years ago

A property has been assessed at $225 000. The mill rate is 14.5. To find the property tax, you would multiply the mill rate by:

jarptica [38.1K]

A would be the answer

8 0

2 years ago

A student repeatedly measures the mass of an object using a mechanical balance and gets the following values: 560 g, 562 g, 556

MrRissso [65]

Answer: 2.76 g

Step-by-step explanation:

The formula to find the standard deviation:-

$\sigma=\sqrt{\dfrac{\sum(x_i-\overline{x})^2}{n}}$

The given data values : 560 g, 562 g, 556 g, 558 g, 560 g, 556 g, 559 g, 561 g, 565 g, 563 g.

Then, $\overline{x}=\dfrac{\sum_{i=1}^{10} x_i}{n}\\\\\Rightarrow\ \overline{x}=\dfrac{560+562+556+558+560+556+559+561+565+563}{10}\\\\\Rightarrow\ \overline{x}=\dfrac{5600}{10}=560$

Now, $\sum_{i=1}^{10}(x_i-\overline{x})^2=0^2+2^2+(-4)^2+(-2)^2+0^2+(-4)^2+(-1)^2+1^2+5^2+3^2\\\\\Rightarrow\ \sum_{i=1}^{10}(x_i-\overline{x})^2=76$

Then, $\sigma=\sqrt{\dfrac{76}{10}}=\sqrt{7.6}=2.76$

Hence, the standard deviation of his measurements = 2.76 g

6 0

3 years ago

The average of eight numbers is 56. When one of the numbers was left out, the mean decreased to 54. What number was left out?

Alexandra [31]

The number that was left out is 70.

<h3>What is the number that was left out?</h3>

Average is the sum of a set of numbers divided by the total numbers in the data set.

Average = sum of numbers / total numbers

Sum of numbers when there are 8 numbers = 56 x 8 = 448
Sum of numbers when there are 7 numbers = 54 x 7 = 378
Difference = 448 - 378 = 70

To learn more about average, please check: brainly.com/question/25842202

#SPJ1

4 0

1 year ago