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Nonamiya [84]
3 years ago
9

Which of the following are mathematical sentences? Check all that apply.

Mathematics
2 answers:
Paraphin [41]3 years ago
5 0
A, C, E

any mathematical expression that then includes an equal sign becomes a sentence or equation
Paraphin [41]3 years ago
5 0

Answer: A. 4 - d = 8

C. 3 + 2 = 5

E. 1 < 2 

Step-by-step explanation:

  • A mathematical sentence makes by combining two expressions with a comparison operator (+,-,×,÷) to create a fact that it may be either true or false.

A. 4 - d = 8

It is a mathematical statement which says that the difference between 4 and d is 8.

B. 4 - v

It is not a mathematical statement because it is neither true nor false. It is just a variable expression.

C. 3 + 2 = 5 

It is a mathematical statement which is true.

D. 6 

It is not a mathematical statement because it is neither true nor false.

E. 1 < 2 

It is not a mathematical statement which is false. It is just a numerical expression.

F. 5g

It is not a mathematical statement because it is neither true nor false.It is just a variable expression.

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In ΔUVW, the measure of ∠W=90°, VW = 32 feet, and WU = 78 feet. Find the measure of ∠V to the nearest degree.
DanielleElmas [232]

Answer: 67.68^{\circ}

Step-by-step explanation:

Given

\angle W=90^{\circ}

VW=32\ ft

WU=78\ ft

from the figure, we can write

\Rightarrow \tan v=\dfrac{UW}{VW}\\\\\Rightarrow \tan v=\dfrac{78}{32}\\\\\Rightarrow \tan v=2.437\\\Rightarrow v=\tan^-1(2.437)\\\Rightarrow v=67.68^{\circ}

7 0
2 years ago
Find f(-2) for the function f(x)= 3x2-2x+7
4vir4ik [10]

Answer:

f( - 2) = 23

Step-by-step explanation:

f(x) = 3 {x}^{2}  - 2x + 7 \\ plug \: x =  - 2 \\ f( - 2) = 3 {( - 2)}^{2}  - 2( - 2)+ 7 \\  = 3 \times 4 + 4 + 7 \\  = 12 + 11 \\  \huge \red{ \boxed{ f( - 2) = 23}}

4 0
3 years ago
One type of insect is 0.0052 meters long. What is the lenght in scientific notation
Ket [755]

Answer:

5.2 × 10^{-3}

Step-by-step explanation:

a number in scientific notation is expressed as

a × 10^{n}

where 1 ≤ a < 10 and n is an integer

write 0.0052 as a number between 1 and 10, that is 5.2

we have to the move the decimal point 3 places to the left to retain it's value

3 places left means n is - 3

0.0052 = 5.2 × 10^{-3}


8 0
3 years ago
Given: X = r + 2, Y = 2r - 9, and Z = r 2 + 17r + 30. Simplify [X · Y - Z] ÷ X.
ale4655 [162]
( (r+2) * (2r-9)-(r^2+17r+30) )/(r+2)

none of the parenthetical operations or power operations can be simplified further, so multiplication and division first, left to right:

(2r(r+2) -9(r+2) - r^2 + 17r +30)/(r+2)

(2r^2 + 2r -9r+18 -r^2 +17r +30 )/(r+2)

(r^2 +10r +48)/(r+2)


7 0
3 years ago
I need help ASAP.<br><br> 3+2-(6-(1+1)
beks73 [17]

Answer:

1

Step-by-step explanation:

3+2-(6-(1+1)

3+2-(6-2)

3+2-4

1

5 0
3 years ago
Read 2 more answers
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