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3 years ago

3 more than one-half of a number is 10. What is the number?

Mathematics

2 answers:

melisa1 [442]3 years ago

8 0

Answer:

Step-by-step explanation:

You solve this problem by subtracting 3 from 10 because you have to solve it inversely. After doing this you get 7. Since that is 1/2 a number the number is 14

Pani-rosa [81]3 years ago

3 0

Answer:

Step-by-step explanation:

Let's call the number x.

$\dfrac{x}{2}+3=10$

Subtract 3 from both sides:

$\dfrac{x}{2}=7$

Multiply both sides by 2:

$x=14$

Hope this helps!

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The diagram shows a triangle.<br><br> What is the value of w?

marshall27 [118]

Answer:

63-degrees

Step-by-step explanation:

triangle = 180 degrees

46 + 71 + w = 180

117 + w = 180 *subtract 117 from both sides*

w = 63

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3 years ago

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Polygons EFGH and E'F'G'H' are shown on the following coordinate grid:

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3 years ago

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3 years ago

If each quadrilateral below is a parallelogram,find the missing measures.

zhenek [66]

Answer:

Part 1) $MN=31\ units$

Part 2) $KN=45\ units$

Part 3) m∠K=61°

Part 4) m∠L=119°

Part 5) m∠M=61°

Step-by-step explanation:

we know that

In a parallelogram opposite angles and opposite sides are congruent and consecutive angles are supplementary

Part 1) Find the side MN

we know that

MN≅KL ----> by opposite sides

we have

$KL=31\ units$

therefore

$MN=31\ units$

Part 2) Find the side KN

we know that

KN≅LM ----> by opposite sides

we have

$LM=45\ units$

therefore

$KN=45\ units$

Part 3) Find the measure of angle K

we know that

m∠K+m∠N=180° ----> by consecutive interior angles

we have

m∠N=119°

substitute

m∠K+119°=180°

m∠K=180°-119°

m∠K=61°

Part 4) Find the measure of angle L

we know that

m∠L≅m∠N ----> by opposite angles

we have

m∠N=119°

therefore

m∠L=119°

Part 5) Find the measure of angle M

we know that

m∠M≅m∠K ----> by opposite angles

we have

m∠K=61°

therefore

m∠M=61°

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Answer:

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Step-by-step explanation:

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