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madam [21]
3 years ago
15

-3z = -21 Help me pliss

Mathematics
2 answers:
Basile [38]3 years ago
8 0
Answer: z= 7
Work: -21/-3=7
Agata [3.3K]3 years ago
8 0
-3z÷ -3. -21÷ -3. by subtracts
z= 7
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Which equations show you how to find 16-9?
Pie
The correct answer is B.
16-9=7
So, 7+9=16.

If we add to 9 only 1 (out of those 7) we have then 10, remaining 6.
9+1=10

Now, if to 10 we add the remaining 6 we will have the final 16.
10+6=16

16-9=7 <=> 9+7=16 <=> (9+1)+6=16
5 0
3 years ago
Jane cuts a foam block along the red line. When she looks at the newly
mr_godi [17]

Answer:

B. A rectangle, 4 in by 3 in

Step-by-step explanation:

The foam has the shape of a cuboid with base of 10 in by 4 in and height of 3 in.

The foam has a front elevation of a rectangle with dimension of 4 in by 3 in. It has a left elevation of dimension 10 in by 3 in and a plan of dimension 10 in by 4 in.

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8 0
3 years ago
Find the square roots of 9604​
OLEGan [10]

Answer:

98

You have to use prime factor decompisition. I hope this helps

5 0
3 years ago
Read 2 more answers
Help me with this please.
Ira Lisetskai [31]

Answer:

JL = 78

Step-by-step explanation:

MN is a midsegment. Based on the midsegment theorem,

MN = ½(JL)

MN = 5x - 16

JL = 4x + 34

Plug in the value

5x - 16 = ½(4x + 34)

5x - 16 = ½*4x + ½*34

5x - 16 = 2x + 17

Collect like terms

5x - 2x = 16 + 17

3x = 33

Divide both sides by 3

x = 11

✔️JL = 4x + 34

Plug in the value of x

JL = 4(11) + 34

JL = 44 + 34

JL = 78

5 0
3 years ago
Find XY if X(0, -7) and Y(-3, 2).<br> d =
guapka [62]

9514 1404 393

Answer:

  d = 3√10 ≈ 9.487

Step-by-step explanation:

The distance formula is appropriate.

  d = √((x2 -x1)^2 +(y2 -y1)^2)

  d = √((-3 -0)^2 +(2 -(-7))^2) = √(9 +81) = √90

  d = 3√10

7 0
2 years ago
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