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2 years ago

Need help asap in delta math assignment

Mathematics

2 answers:

V125BC [204]2 years ago

8 0

Answer:

Step-by-step explanation:

B^2 = C^2 -A^2 89-25 = 64 sqrt(64) is 8

Ivan2 years ago

5 0

Answer:

Step-by-step explanation:

use Pythagoras rule

${a}^{2} + {b}^{2} = {c}^{2}$

${5}^{2} + {x}^{2} = { \sqrt{89} }^{2}$

so x = 8

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Question 1 (1 point)

olga55 [171]

Answer:

1) $2y^{2}+4y-9$

2) $18x^{5}y^{4}z$

3) $6x^{5}-12x^{4}+9x^{3}$

4) 40

5) $x^{3}-7x^{2}+3x+36$

Step-by-step explanation:

1) Distribute the negative sign that is outside the parentheses and then you must add like terms, as following:

$(y^{2}-3y-5)-(-y^{2}-7y+4)=y^{2}-3y-5+y^{2}+7y-4=2y^{2}+4y-9$

2) According to the Product property of exponents, when you multiply powers with the same base, you must add the exponents. Then:

$(6xy^{3}z)(3x^{2}yx^{2})=18x^{5}y^{4}z$

3) Apply the Distributive property and the Product property of exponents. Then, you obtain:

$-3x^{3}(-2x^{2}+4x-3)=6x^{5}-12x^{4}+9x^{3}$

4) $(4a+5)^{2}$ is a square of a sum, then, by definition you have:

$(a+b)^{2}=a^{2}+2ab+b^{2}$

Then:

$(4a+5)^{2}=(4a)^{2}+2(4a)(5)+5^{2}=16a^{2}+40a+25$

The coefficient of the second term is the number in front of the variable a. Then, the answer is: 40

5) Apply the Distributive property and the Product property of exponents, then, oyou must add the like terms:

$(x-4)(x^{2}-3x-9)=x^{3}-3x^{2}-9x-4x^{2}+12x+36=x^{3}-7x^{2}+3x+36$

6 0

3 years ago

A square canvas has an area of 49 square inches. What is the perimeter of the canvas?

a_sh-v [17]

Answer:

Step-by-step explanation:

Area = side*side

side * side = 49

side * side = 7*7

side = 7 inches

Perimeter = 4*side

=4 * 7

= 28 inches

4 0

3 years ago

Read 2 more answers

The frequency table shows the results of drawing 20 cards from a bag of 100. There are an

zepelin [54]

Answer:

It's 50 percent right

Step-by-step explanation:

there are many colors and they could all be different

4 0

3 years ago

Options: 14 36 16 12

Lerok [7]

Answer:

12 million dollars.

Step-by-step explanation:

Let the sales in the first year be x million .

So the sales in the second year were x + 4 million, in the third year were 3(x + 4) and this is 48 million dollars.

So we have the equation 3(x + 4) = 48

3x + 12 = 48

3x = 36

x = 12 million dollars.

8 0

3 years ago

Find an explicit rule for each geometric sequence using subscript notation. Use a calculator and round your answer to the neares

BigorU [14]

Answer:

Hence the explicit rule is a(n) 1184.625.

7 0

2 years ago