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Zepler [3.9K]
3 years ago
5

Evaluate when x = 3, y = -3 and z = -2: xy + 2z

Mathematics
2 answers:
Zepler [3.9K]3 years ago
8 0
(3 x -3) + (2 x -2)
-9 - 4 = -13

wel3 years ago
4 0

Answer:

3*-3+2*-2=

Step-by-step explanation:

-13

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Kirk's family drove 36 miles in 50 minutes, which was 48% of the distance to his grandmother's house. What was the total distanc
Makovka662 [10]

Answer:

Option D is correct.

75 miles is the total distance in miles to Kirk's grandmother's house

Step-by-step explanation:

Let x represents the total distance in miles to Kirk's grandmother's house.

As per the statement:

Kirk's family drove 36 miles in 50 minutes, which was 48% of the distance to his grandmother's house

⇒ Distance Kirk's family drove = 36 miles.

then;

36 = 48% of x

36 = \frac{48}{100}x

Multiply both sides by 100 we get;

3600 = 48x

Divide both sides by 48 we have;

75 miles = x

Therefore, the total distance in miles to Kirk's grandmother's house is 75 miles

4 0
3 years ago
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Draw a line representing the rise and a line representing the sun of the line. State the slope of the line in simplest form.
nevsk [136]
You have to post a pic I don’t understand
4 0
3 years ago
There is a sales tax of $20 on an item that costs $128 before tax. The sales tax on a second item is $6.75 . How much does the s
Kazeer [188]

$20/128 = 6.75/x

using cross products

20x=128*6.75

divide by 20

x =43.20

8 0
3 years ago
Suppose that during one period extreme cold,the average daily temperature decreased 1 1/2 F each day. How many days did it take
Alenkasestr [34]

We have been given that during one period extreme cold, the average daily temperature decreased 1\frac{1}{2} degree F each day. We are asked to find number of days it will take for the temperature to decrease by 9 degree F.

First of all we will convert our mixed fraction into improper fraction.

1\frac{1}{2}=\frac{3}{2}

Now we will divide total temperature change (9) by average daily temperature change (\frac{3}{2}) to find number of days.

9\div\frac{3}{2}

Dividing a number by a fraction is same as multiplying the number by reciprocal of the fraction.

9\cdot\frac{2}{3}

3\cdot2=6

Therefore, it will take 6 days for the temperature to decrease by 9 degree F.

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3 years ago
What is the slope of the line?
mestny [16]

Answer:

1over1 because it goes up by 1 and right by 1. u welcome

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