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Juli2301 [7.4K]
3 years ago
11

Can anyone help me with this math plz? -7/8k=-21 show work plz

Mathematics
2 answers:
photoshop1234 [79]3 years ago
7 0

Answer:

k = 24

Step-by-step explanation:

Let's solve your equation step-by-step.

Step 1 : Multiply both sides by 8/(-7)

(\frac{8}{-7} ) * (\frac{-7}{8} k) = (\frac{8}{-7} ) * (-21)

k = 24

Hope this helps, have a nice day!

Vaselesa [24]3 years ago
5 0

-\frac{7}{8}k=-21\\\\k=-21:(-\frac{7}{8})\\\\k=-21\cdot(-\frac{8}{7}) \ (7 \ and \ 21 \ divide \ by \ 7)\\\\\huge\boxed{k=24}

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3 years ago
Help please solve this
NemiM [27]

RU is a diameter, so the two equations make half a circle which is 180 degrees.

24x+5 + 10x+5 = 180

Combine like terms:

34x + 10 = 180

Subtract 10 from both sides:

34x = 170

Divide both sides by 34

X= 5

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Replace x with 5

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Answers:

X = 5

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4 0
4 years ago
What is a reasonable estimate for the product 43 times 68
dsp73
43 times 68.

43
x68

8 times 3 is 24. Bring the 2 over the 4.
8 times 4 is 32. Add 4. Equals 36.
Answer so far is 364.

Add a 0 before answering.
3 times 6 is 18. Bring the 1 over the 4.
4 times 6 is 24. Add 4. Equals 28.
Answer so far is 288

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Final answer is 652.
7 0
3 years ago
Read 2 more answers
Consider that 1 inch = 2.54 centimeters. Which three statements are true for converting 18 feet to centimeters?
serg [7]

Answer:

There are 548.64 cm in 18 feet.

Step-by-step explanation:

We know that, 1 inch = 2.54 centimeters.

We need to convert 18 feet to centimeters

Also, 1 foot = 12 inch

Firstly we will convert 18 feet to inch.

18 feet = 12 × 18 inch

= 216 inch

Now to convert 18 feet to centimeters, multiply 216 inch by 2.54 cm as follows :

216 inch = 2.54×216 centimeters

= 548.64 cm

Hence, there are 548.64 cm in 18 feet.

4 0
3 years ago
BRANLIEST+15Pts Need help! In each of the following graphs, the two given polygons are similar. Write precisely a single dilatio
dolphi86 [110]

Answer:

With a center of (2, -2) the dilation coefficient is 3

Lt me know if I can explain any part more to help you understand.  

Step-by-step explanation:

To get the coefficient we want to see where the points start and where they end up.  it is difficult to tell the exact point of E and G and their transformations, so we will only use H and F and their transformations.  We do need 2 to get the center.

From now on I will only be oooking at y values since we know the center x value.

We know the center has to be between 0 and - 3 because it has to be inside of both shapes.

we also know that the distance from the center point to H is c - 0 and F is c - (-3).

then we also know the same number is multiplying these distances to get the new coordinates, 4 and -5 rspectively.  or more accurtely, the distance is being multiplied by the same number.

This allows us to form some proportions.  namely (c-0)/(c-4) = (c+3)/(c+5)  Solving for c, which is easier than it looks like it might be, gets us c = -2, which is the y coordiante of the center point.

So the center point is (2, -2)

Now finding the dilation coefficient is pretty simple.  How much is each original point multiplied y to get the new point.  To get this there are a few ways.  I am just going to calculate what gets us from one distance to the other.  One distance is 2 to 6 and the other is 1 to 3.  So the answer is 3.

So with a center of (2, -2) the dilation coefficient is 3

4 0
3 years ago
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