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2 years ago

Help what is the quadratic equation because I think I did it wrong

Mathematics

1 answer:

zhannawk [14.2K]2 years ago

4 0

Answer:

Exact form:

$x=\sqrt{17} +3,-\sqrt{17} +3$

Step-by-step explanation:

Take the root of both sides and solve.

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Which description best fits the graph

soldier1979 [14.2K]

Answer:

Step-by-step explanation:

4 0

2 years ago

Hi :), im really struggling with this. Just wanted to know if anyone can explain step by step for me please. Id really appreciat

Dvinal [7]

Answer:

314 m²

Step-by-step explanation:

the formula for the surface area of a sphere (As) is

As = 4×pi×r²

the radius r (half of the diameter) is clearly indicated as 5m.

so, As = 4×3.14×5² = 4×3.14×25

I don't even need a calculator for this, as 4×25 = 100

so, As = 100×3.14 = 314

(you know, when multiplying by 10, the decimal point moves right one position. multiply by 100 it moves 2 positions, and so on).

7 0

2 years ago

6 (x-3)=4 (x-4)+2 (x-1) how many solutions are possible for the equation

olga2289 [7]

Indefinitely many solutions is the answer to this problem. All real numbers are solutions. The answer was 0=0.

4 0

3 years ago

Read 2 more answers

A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past

Volgvan

Answer: We reject the null hypothesis, and we use Normal distribution for the test.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis : $H_0:\mu\geq 50000$

Alternate hypothesis : $H_1:\mu$

There is 5% level of significance.

$\bar{X}=46800\\\\\sigma=9800\\\\n=29$

So, the test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{46800-50000}{\dfrac{9800}{\sqrt{29}}}\\\\z=-1.75$

Since alternate hypothesis is left tailed test.

So, p-value = P(z≤-2.31)=0.0401

And the P-value =0.0401 is less than the given level of significance i.e. 5% 0.05.

So, we reject the null hypothesis, and we use Normal distribution for the test.

4 0

3 years ago

6570 ÷ 16 410 410 1/16 410 3/8 410 5/8

UNO [17]

Answer:

Exact Form:

3285

Decimal Form:

410.625

Mixed Number Form:

410

thats what i got i hope this helps

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers