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Andrej [43]
3 years ago
15

A 8-foot tall stop sign creates a shadow that is 2 feet long. At the same time, a utility pole creates a shadow that is 9 feet l

ong. How tall, in feet, is the utility pole?
Mathematics
1 answer:
Fudgin [204]3 years ago
8 0

Answer:  36 feet

==================================================

Work Shown:

(sign height)/(sign shadow) = (pole height)/(pole shadow)

8/2 = x/9

8*9 = 2*x ... cross multiply

72 = 2x

2x = 72

x = 72/2 ... divide both sides by 2

x = 36

The utility pole is 36 feet tall.

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Find the matrix product, if possible.
kondor19780726 [428]

Answer:

below.

Step-by-step explanation:

The number of columns in the first matrix must equal to the number of rows in the second for multiplication to be possible.

Here first matrix has 3 columns and second one has 3 rows so POSSIBLE.

[ -8 2 2]    { 3 }

                [ 0 ]

                [ -3]

=  -8*3  + 2*0 + 2 * -3 = [-30]  <-------- Answer.

Note  a  1*3 matrix multiplied by a 1*3 matrix gives a 1*1 result.

3 0
2 years ago
Eric has 1 5/9 cups of yogurt to make smoothies.Each smoothie uses 1/3 of a cup of yogurt.What is the maximum number of smoothie
Vedmedyk [2.9K]

Maximum number of smoothies that Erica can make with the yogurt is 5

<h3><u>Solution:</u></h3>

Given that Eric has 1\frac{5}{9} cups of yogurt to make smoothie

Each smoothie uses \frac{1}{3} of a cup of yogurt

To find: maximum number of smoothies that Erica can make with the yogurt

Let 'n' be the number of smoothies that Erica can make with the available yogurt

number of smoothies that Erica can make with the yogurt is calculated by divinding the total available cups of  yogurt by cups of yogurt needed for one smoothie

<em><u>Therefore we get:</u></em>

$n=\frac{\text { total available cups of yogurt }}{\text { cups of yogurt needed for one smoothie }}$

total available cups of yogurt = 1\frac{5}{9} = \frac{9 \times 1 +5}{9} = \frac{14}{9}

cups of yogurt needed for one smoothie = \frac{1}{3}

Substituting the values in above formula we get,

\begin{aligned}&n=\frac{\frac{14}{9}}{\frac{1}{3}}\\\\&n=\frac{14}{9} \times \frac{3}{1}=\frac{14}{3}=4.66 \approx 5\end{aligned}

Thus maximum number of smoothies that Erica can make with the yogurt is 5

4 0
3 years ago
Dominique can ice cupcakes twice as fast as Houston. When they work together, Dominique and Houston can ice a large order of cup
olganol [36]
This is a work problem. It can be solved as follows:

Houston = 1/x
Dominique = (1/2x)
Together = 1/5

Then, we add Houston and Dominique:

1/x + 1/2x = 1/5

Solve for x,

x = 2/15

Therefore, it would take 15/2 hours for Houston to ice by himself, the last option.
6 0
3 years ago
Read 2 more answers
How many solutions exist for the given equation? 3(x – 2) = 22 – x zero one two infinitely many
coldgirl [10]

Answer:

one solution

Step-by-step explanation:

Given

3(x - 2) = 22 - x ← distribute parenthesis on left side

3x - 6 = 22 - x ( add x to both sides )

4x - 6 = 22 ( add 6 to both sides )

4x = 28 ( divide both sides by 4 )

x = 7

5 0
3 years ago
Read 2 more answers
Phyllis invested 800 dollars into two different accounts, a portion earning a yearly interest rate of
Nitella [24]

The amount of money that Phyllis invested at each given rate of 4 and 6 percent is = $394.57 and $591.86 respectively.

<h3>Calculation of the total capital invested</h3>

The time the investment lasted= 12 years.

Simple interest = 1579.05 - 800= $779.05

The principal capital= $800

Rate of the both capital invested;

= SI × 100/P ×T

= 779.05 × 100/800 × 12

= 77,905/9600

= 8.11%

To find the amount of money that Phyllis invested at each given rate,

Rate 1 = 4/8.11× 800

= 3200/8.11

= $394.57

Rate 2 = 6/8.11× 800

= 4800/8.11

= $591.86

The amount of money that Phyllis invested at each given rate of 4 and 6 percent is = $394.57 and $591.86 respectively.

Learn more about simple interest here:

brainly.com/question/20690803

#SPJ

7 0
1 year ago
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