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natita [175]
3 years ago
8

In the following proportion, what does z equal? 3/7 = 15/z

Mathematics
2 answers:
lions [1.4K]3 years ago
8 0

Answer:

yes Z= 35

Step-by-step explanation:

3  = 15

7   =  z

Cross multiply:

3 * z = 7 * 15

Simplifying

3 * z = 7 * 15

Multiply 7 * 15

3z = 105

Solving

3z = 105

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Divide each side by '3'.

z = 35

Simplifying

z = 35

NARA [144]3 years ago
7 0

3/7 = 15/z

using cross products

3z = 7*15

3z = 105

divide by 3

z = 35

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Answer:

she will need 300

I hope this helped

Step-by-step explanation:

6 times 300= 1800

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3 years ago
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I am a 4 digit number my one digit is 2 my tens digit is 4 times greater then my ones my hundreds and thousands digits are both
Y_Kistochka [10]

Answer:

6682

Step-by-step explanation:

So we have a 4 digit number and we need to find all the digits of it.

First, we are told that the one digit is 2. So the number is xxx2

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8 0
3 years ago
Let x △ y be defined by x △ y=x−5y. What is the value of 3 △  (−4)
TEA [102]

x\Delta y=x-5y\\\\3\Delta(-4)\qquad\text{put the values x = 3 and y = -4 to the expression x - 5y}:\\\\3\Delta(-4)=3-5(-4)=3+20=23

5 0
3 years ago
Solve by substitution. Please show work<br> -x+9y=-5<br> x-5y=1
kkurt [141]

Let's solve for x.

−x+9y=−5

Step 1: Add -9y to both sides.

−x+9y+−9y=−5+−9y

−x=−9y−5

Step 2: Divide both sides by -1.

−x ÷ −1 = −9y−5 ÷ −1

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THE ANSWER FOR THE OTHER EQUATION: (x-5y=1)

Let's solve for x.

x−5y=1

Step 1: Add 5y to both sides.

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x=5y+1

Answer:

x=5y+1

I hope this helped I was a little confused on what your problem meant...so if this is not what you asked for just lmk so I can fix it for you :)

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2 years ago
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