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3 years ago

1. It refers to the size of a surface. What is it?

1 answer:

6 0

Area of course also just a reminder Area is measured in square units such as square centimteres, square feet, square inches, etc

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2) Evaluate the given numerical expression. A) 9 B) 12 C) 14 D) 21

eduard

Answer:

$\boxed{\sf{14}}$

Step-by-step explanation:

$\boxed{\underline{\text{ORDER OF OPERATIONS:}}}$

Use the order of operations.

Note: PEMDAS or BODMAS stands for:

PEMDAS

Parentheses
Exponents
Multiply
Divide
Add
Subtract

BODMAS

Brackets
Order
Divide
Add
Subtract

First, do parentheses.

3+6*(5+4)÷3-7

(5+4)=9

$\Longrightarrow: \sf{3+6* 9\div 3-7}$

Do multiply and divide.

6*9=54

54/3=18

Then, rewrite the problem down.

$\Longrightarrow: \sf{3+18-7}$

Add.

$\sf{3+18=21}$

$\sf{21-7=\boxed{\sf{14}}$

$\Longrightarrow: \boxed{\sf{14}}$

Therefore, the correct answer is "C. 14".

I hope this helps, let me know if you have any questions.

8 0

2 years ago

Carmen is an engineer making plans to run a rail line, represented by the transversal t, through a city.

lubasha [3.4K]

Answer:

$m\angle 1=155\degree$

Step-by-step explanation:

The missing diagram is shown in the attachment.

We need to Examine Carmen’s rail plans to identify the measure of ∠1.

Recall that corresponding angles are equal.

From Carmen’s rail plans, the measure of $\angle 1$ corresponds to 155 degrees because the streets represented by lines V and W are parallel and t is a transversal.

Therefore $m\angle 1=155\degree$

8 0

3 years ago

Read 2 more answers

The measures of the angles of a triangle are shown in the figure below. Solve for x

sashaice [31]

Answer:

Step-by-step explanation:

The angles that we are sure about is 33 and 90. The angles of a triangle add up to 180. 33 + 90 = 123. 180 - 123 = 57. 57 = 7x+8, 49 = 7x, x = 7.

4 0

3 years ago

Read 2 more answers

A bank wishes to invest a $100, 000 trust fund in three sources: bonds paying 8%; certificates of deposit paying 7%; and first m

Nuetrik [128]

Answer:

It is not possible to make the investment under the given conditions.

Step-by-step explanation:

Let x, y and z be the amounts invested in bonds, certificates of deposit and mortgages respectively.

1st equation

“A bank wishes to invest a $100, 000 trust fund in three sources”

x + y + z = 100,000

2nd equation

“The bank wishes to realize an $8, 000, annual income from the investment and bonds paying 8%; certificates of deposit paying 7%; and first mortgages paying 10%”

0.8x + 0.7y + 0.1z = 8,000

3rd equation

“the total amount invested in bonds and certificates of deposit must be triple the amount invested in mortgages”

x+y = 3z

and we have a linear system of 3 equations with 3 unknowns

x + y + z = 100,000

0.8x + 0.7y + 0.1z = 8,000

x + y -3z = 0

This system has a unique solution given by

x = -470,000

y = 545,000

z = 25,000

Since x is negative, we deduct there is no way to do such an investment.

7 0

4 years ago

Someone help. find the value of a and b

Dafna11 [192]

A = 7
B = 14

For A:
(7(sqrt)2)sin(45) = 7

7/sin(30) = 14

4 0

3 years ago