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7nadin3 [17]
3 years ago
13

X^2−2(x+5) x=10 thanks for helping

Mathematics
1 answer:
rusak2 [61]3 years ago
3 0

Step-by-step explanation:

If x=10

\tt{ x^2-2(x+5) } ⠀

\tt{ (10)^2-2×(10+5) } ⠀

\tt{100-2×15  } ⠀

\tt{ 100-30 } ⠀

\bold{ 70 } ⠀

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Please help me!
yan [13]

Answer:

80

Step-by-step explanation:

<u><em>A = Area of First Rectangle </em></u>

<u><em>B = Area of Second Rectangle </em></u>

<u><em>w = Width</em></u>

<u></u>

12(w)=320+B (1st Equation)

8(w) = B (2nd Equation)

w=B/8 <em><u>(Plug this value of w into the first equation)</u></em>

12B/8 = 320 +B <u><em>(you get this)</em></u>

12B= 2560 + 8B <u><em>(Simplify)</em></u>

4B = 2560

B =640 <em><u>plug this value into the 2nd equation</u></em>

8(w) = 640

w = 80

<em>To Test This</em>

12x80 = 960

8x80 = 640

<h3>960 - 640 = 320 <u><em>Therefore the answer is correct the width is 80</em></u></h3>

<h3 />
5 0
3 years ago
Miranda is packing eggs in cartons . Each carton holds 12 eggs. She already filled 3 cartons . How many more eggs does she need
Butoxors [25]

Answer:

carton = 12

12x17=204

miranda needs 204 more eggs to fill 17 egg cartons

5 0
3 years ago
What is 14 feet in inches
erastova [34]

168 inches.

Each foot equals 12 inches so multiplying by 14 will give you 168

8 0
3 years ago
Suppose that the quality control manager for a cereal manufacturer wants to ensure that bags of cereal are being filled correctl
likoan [24]

Answer: No, these results are not statistically significant because

p > 0.05

Step-by-step explanation:

The null hypothesis is

H0 : μ = 17

The alternative hypothesis is

H 1 : μ ≠ 17

where μ is the mean amount of cereal in each box.

The p value that he got is 0.1499. This is greater than alpha = 0.05 which is the given level of significance.

If the level of significance is lesser than the p value, we would accept the null hypothesis.

Therefore, the correct option is

No, these results are not statistically significant because p>0.05

6 0
3 years ago
√5•√80<br><br> Show your steps pls ty
kykrilka [37]

Answer:

20

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}

Given

\sqrt{5} × \sqrt{80}

= \sqrt{5(80)}

= \sqrt{400}

= 20

8 0
3 years ago
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