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2 years ago

Write a word phrase for the algebraic expression 3x+10

1 answer:

5 0

Hello there!

Jenny wants to park in an airport parking lot. The parking lot costs x amount of money per hour, plus an additional parking fee of $10. Jenny stays in the parking lot for 3 hours.

This causes our equation to be 3x (3 hours) + 10 (additional parking fee).

I hope this helps!

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Suppose you produce a camera that costs $50 to make. At a selling price of $45, you will _____.

Daniel [21]

You will lose money. Because $50 to make subtract $45 to sell (50-45) leaves you losing $5.

4 0

3 years ago

Read 2 more answers

An inverted pyramid is being filled with water at a constant rate of 25 cubic centimeters per second. The pyramid, at the top, h

UNO [17]

Answer:

$\frac{225}{16} cm/s$

Step-by-step explanation:

We are given that

$\frac{dV}{dt}=25cm^3/s$

Side of base=4 cm

l=w=4 cm

Height,h=12 cm

We have to find the rate at which the water level rising when the water level is 4 cm.

Volume of pyramid= $\frac{1}{3}lwh=\frac{1}{3}l^2h$

$\frac{l}{h}=\frac{4}{12}=\frac{1}{3}$

$l=\frac{1}{3}h$

Substitute the value

$V=\frac{1}{27}h^3$

Differentiate w.r.t t

$\frac{dV}{dt}=\frac{3}{27}h^2\frac{dh}{dt}$

Substitute the values

$25=\frac{1}{9}(4^2)\frac{dh}{dt}$

$\frac{dh}{dt}=\frac{25\times 9}{16}=\frac{225}{16} cm/s$

5 0

3 years ago

If sin theta = -0.7660, which of the following represents an approximate value of tan theta, for 180 degrees < theta < 270

Elis [28]

We have that
sin ∅=-0.7660

the sin ∅ is negative
so
∅ belong to the III or IV quadrant
but
180°< ∅ < 270°
hence
∅ belong to the III quadrant
sin ∅=-0.7660
sin² ∅+cos² ∅=1
cos² ∅=1-sin² ∅------> cos² ∅=1-(0.7660)²-----> 0.4132
cos ∅=√0.4132-----> cos ∅=0.6428
the value of cos ∅ is negative-------> III quadrant
cos ∅=-0.6428

tan ∅=sin ∅/ cos ∅----> tan ∅=-0.7660/-0.6428----> tan ∅=1.1917

the answer is
tan ∅ is 1.1917

4 0

3 years ago

What is the expression that is equivalent to 26 only using 3,4,5,7,9 and +,-,divide,multiple

Nikitich [7]

answer: (5*4)+(9-3)

5*4=20

(20+9)-3=26

5 0

2 years ago

Which of the following activities are examples of data gathering? Check all that apply. A. Surveying students about their favori

katrin [286]

A. Surveying the students about their favorite type of math problem.
and
C. Sampling water for contaminants