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3 years ago

Estimate and then solve the equation

Mathematics

1 answer:

AnnyKZ [126]3 years ago

6 0

Answer: x-18=-13

4 3/5

Step-by-step explanation:

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-2(x + 1) = –2x+5<br> I don’t know have to do this. And I really need the answers

amm1812

Answer:

theres no solution

Step-by-step explanation:

There are no values of x that make the equation true.

No solution

3 0

3 years ago

Read 2 more answers

How can i find the value of x

alukav5142 [94]

Your equation is correct.

$x+3x+26+34=180\\\\4x+60=180\ \ \ |-60\\\\4x=120\ \ \ |:4\\\\\boxed{x=30}$

6 0

3 years ago

Construct a 99% confidence interval for the population standard deviation of white blood cell count (in cells per microliter). A

kogti [31]

Answer:

The correct option is 1.148 < σ < 6.015

Explanation:

The 99% confidence interval for the standard deviation is given below:

$\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\frac{0.01}{2} }} }$

Where:

$\chi^{2}_{\frac{0.01}{2} }=18.548$

$\chi^{2}_{1-\frac{0.01}{2}}=0.676$

Therefore, the 99% confidence interval is:

$\sqrt{\frac{(7-1)2.019^{2}}{18.548} }$

$1.148$

Therefore, the option 1.148 < σ < 6.015 is correct

3 0

4 years ago

Ruth sees 11 flags in the park. Juno sees 4 more flags than Ruth. Sandra sees 9 more flags than Juno. How many flags does Sandra

Irina-Kira [14]

First you add 11+4 which equals 15 then you add 15+9 which equals 24. So Sandra sees 24 flags

7 0

4 years ago

Round to nearest tenth and solve for x

stepladder [879]

Answer:

$\displaystyle 9,6$

Step-by-step explanation:

$\displaystyle \frac{x}{6,4} = csc\:42 \hookrightarrow 6,4cot\:42 = x \hookrightarrow 9,5646499191... = x \\ \\ 9,6 ≈ x$

$\displaystyle \frac{6,4}{x} = sin\:42 \hookrightarrow xsin\:42 = 6,4 \hookrightarrow \frac{6,4}{sin\:42} = x \hookrightarrow 9,5646499191... = x \\ \\ 9,6 ≈ x$

Information on trigonometric ratios

$\displaystyle \frac{OPPOCITE}{HYPOTENUSE} = sin\:θ \\ \frac{ADJACENT}{HYPOTENUSE} = cos\:θ \\ \frac{OPPOCITE}{ADJACENT} = tan\:θ \\ \frac{HYPOTENUSE}{ADJACENT} = sec\:θ \\ \frac{HYPOTENUSE}{OPPOCITE} = csc\:θ \\ \frac{ADJACENT}{OPPOCITE} = cot\:θ$

I am joyous to assist you at any time.

6 0

2 years ago