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3 years ago

Match the vocabulary to the correct definition. (only choose 4 to match)

Mathematics

1 answer:

Ivanshal [37]3 years ago

4 0

Answer:

discount:deduct an amount from (the usual price of something).

tip:give (someone) a sum of money as a reward for a service

markup:the amount added to the cost price of goods to cover overheads and profit.

Sales tax:a tax on sales or on the receipts from sales

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Help me find the surface area

Brut [27]

Answer:

Step-by-step explanation:

area of triangular face = ½·3·4 = 6 cm²

area of 3 by 7 face = 3×7 = 21 cm²

area of 5 by 7 face = 5×7 = 35 cm²

area of 4 by 7 face = 4×7 = 28 cm²

total surface area = 2×6 + 21 + 35 + 28 = 96 cm²

6 0

3 years ago

T(x)=1-2x how do you graph this problem

Eva8 [605]

Answer:

Explained

Step-by-step explanation:

The 1 is the y-intercept

The -2 is the slope

First place a point at (0,1)

Then, because it's negative from left to right the graph is decreasing (going lower on the y-axis the farther you go on the x-axis).

Slope is rise over run so the -2 affects how far it goes. So for each value of x that increases by one, a new point will be two units down and one unit right of the previous point. To graph to the left of the y-intercept then you do that backwards where the next point is two units up and one unit left.

Then just draw a straight line connecting all the points.

7 0

3 years ago

Two gears are connected and are rotating simultaneously. The smaller gear has a radius of 3 inches, and the larger gear has a ra

Dovator [93]

Circumference of a circle is C = 2πr.

part 1)

so the radius of the smaller gear is 3 inches, so after a full rotation, namely a revolution, the smaller gear has covered an arc of 2π(3), or 6π.

what angle has the larger gear of 7 inches in radius, has it covered with an arc of 6π?

$\bf \textit{arc's length}\\\\
s=r\theta ~~
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad radians\\
------\\
s=6\pi \\
r=7
\end{cases}\implies 6\pi =7\theta \implies \cfrac{6\pi }{7}=\theta$

part 2)

since the larger gear has a radius of 7, in a revolution it will have an arc of 2π(7), or 14π.

now, we know the smaller gear does a 6π arc in a revolution, how many revolutions will it do in an arc of 14π?

$\bf \begin{array}{ccll}
arc&revolution\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
6\pi &1\\
14\pi &x
\end{array}\implies \cfrac{6\pi }{14\pi }=\cfrac{1}{x}\implies \cfrac{3}{7}=\cfrac{1}{x}\implies x=\cfrac{7}{3}$

6 0

3 years ago

A team that play 35 games lost 2 out of 5 games how many games did they lose?

nexus9112 [7]

Answer:

They lost 15 games

Step-by-step explanation:

2x-5=35

-5 -5

2x=30

/2. /2

X=15

7 0

3 years ago

Read 2 more answers

Austin buys $10 worth of food for his dog each week. There are 52 weeks in a year.

ololo11 [35]

Answer:

b i think

Step-by-step explanation:

8 0

3 years ago