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3 years ago

Evaluate the expression using x=-1 and y=3 6x^4y^3

Mathematics

2 answers:

frozen [14]3 years ago

8 0

Answer: 162

Look at attachment

anzhelika [568]3 years ago

3 0

Step-by-step explanation:

$6 {x}^{4} {y}^{3} \\ \\ = 6 \times ( - 1)^{4} \times (3)^{3} \\ \\ = 6 \times 1\times 27 \\ \\ = 162$

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Which expression is a difference of squares with a factor of 2x5?

Sedbober [7]

Answer:

${( \sqrt{3.5} })^{2} - {( \sqrt{1.5} )}^{2}$

Step-by-step explanation:

The difference of two squares identity is

${x}^{2} - {y}^{2} = (x - y)(x + y)$

When we let

$\sqrt{3.5}$

and

$\sqrt{1.5}$

, we get:

${( \sqrt{3.5} )}^{2} - {( \sqrt{1.5}) }^{2} = (3.5 - 1.5)(3.5 + 1.5)$

This will simplify to give us the required factors

${( \sqrt{3.5} )}^{2} - {( \sqrt{1.5}) }^{2} =2 \times 5$

7 0

3 years ago

A kite flying in the air has a 4-m line attached to it. Its line is pulled taut and casts a 3-m shadow. Find the height of the k

NNADVOKAT [17]

Answer:

2.6

Step-by-step explanation:

I used the a^2+b^2=c^2 to get this answer. I squared all the number given and got 16 and 9. Then I subtract them to get 7. Finally square 7 off and got 2.6 as the final answer

Hope this helped

$\sqrt{7} = 2.6$

3 0

2 years ago

529 = 50x+625 solve for x

cupoosta [38]

529 = 50x + 625

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8 0

3 years ago

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horrorfan [7]

2/20 aka 1/10- hope this helped!

6 0

3 years ago

Read 2 more answers

A set of telephone poles is stacked in a pile, 8 layers high. The top layer consists of 20 telephone

Anarel [89]

Answer:

D. 272 poles

Explanation:

We are given that:

The top layer has 20 poles, the next down one has 24 poles and the third one has 28 poles

We can note that each layer has 4 poles more that the one above it

Based on this, we can get the number of poles in each layer as follows:

Top layer has 20 poles

Second one has 20 + 4 = 24 poles

Third one has 24 + 4 = 28 poles

Fourth one has 28 + 4 = 32 poles

Fifth one has 32 + 4 = 36 poles

Sixth one has 36 + 4 = 40 poles

Seventh one has 40 + 4 = 44 poles

Eighth one has 44 + 4 = 48 poles

Now, we can get the total number of poles by adding the poles in all layers

This is done as follows:

Total number of poles = 20 + 24 + 28 + 32 + 36 + 40 + 44 + 48

Total number of poles = 272 poles

Hope this helps :)

5 0

3 years ago

Evaluate the expression using x=-1 and y=3 6x^4y^3​

Evaluate the expression using x=-1 and y=3 6x^4y^3