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tresset_1 [31]
3 years ago
6

Simplify, and write your answer as a numeral: ( The problem is in the picture I attached )

Mathematics
1 answer:
Vika [28.1K]3 years ago
6 0

Answer:

45

Step-by-step explanation:

(7-4)=3

3^2=9

9*5=45

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Simplify the expression and identify which property is used in each step.
777dan777 [17]

Answer:

1.2

Step-by-step explanation:

(0.85 + 0.50 + 0.15) - 0.30           Given

Simplify by adding in the parentheses first

(0.85 + 0.50 + 0.15) - 0.30

(1.35 + 0.15) - 0.30

(1.5) - 0.30

Subtraction Property

1.5 - 0.30

1.2

7 0
2 years ago
Find an equivalent expression for each expression by simplifying. (3x - 5y) + 7y
sertanlavr [38]
This question is quite simple really. They are basically asking you to combine like terms. You have two different figures with the variable y, so you just combine the them. It would then be 3x + 2y. You cannot simplify this equation any further since there is nothing to solve for or anymore like terms to combine.
4 0
3 years ago
the subway train can hold a 792 people on Tuesday 56941 people rode the subway how many trains could 56941 people how many peopl
zubka84 [21]

Answer:

56,149 would be left over

Step-by-step explanation:

56,941-792=56,149

3 0
3 years ago
If sin phi sin theta = 0.2 and sin phi cos theta = -0.3 and sin phi > 0 what is theta ? Repeat for sin phi < 0.
Rina8888 [55]

Answer:

θ = -33.69°

Step-by-step explanation:

For Φ>0 and Φ<0  (in general Φ≠nπ  where n is an integer), sin(Φ) ≠ 0

Dividing both equations:

\frac{sin(\phi) sin(\theta)}{sin(\phi)cos(\theta)} = tan(\theta) = 0.2/(-0.3)=-2/3\\

Therefore:

arctan(θ) = -2/3

  θ = -33.69°

The answer does not depend on the sign of Φ, in fact we just need that the sine does not become zero, which occurs when Φ is equal to an integer times π (radians) or 180 (degrees)

Have a nice day!

3 0
3 years ago
ron wants to build a ramp with a length of 14 ft and an angle of elevation of 26° the height of the ramp is about 6.1 ft. what i
Bezzdna [24]

Answer:

12.58 feet.

Step-by-step explanation:

Ron wants to build a 14 ft. ramp with an angle of the rise of 26° and the height of the ramp is about 6.1 ft.

We have to find out the length of the base of the ramp.

Now, the ramp forms a right triangle with the base and the height and here, the hypotenuse of the triangle is the ramp itself i.e. 14 ft.

If the base length is x feet, then we can write using the trigonometry

\cos 26^{\circ} =  \frac{\textrm{Base}}{\textrm {Hypotenuse}} = \frac{x}{14}

⇒ x = 14 cos 26° = 12.58 feet. (Answer)

4 0
3 years ago
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