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3 years ago

Solve by extracting roots. Round your answers to two decimal places.

Mathematics

2 answers:

Colt1911 [192]3 years ago

7 0

2.8a^2=55
a^2=55/2.8
a= square root of 55/2.8

Darya [45]3 years ago

6 0

Answer:

a = 2.62 or - 2.62 (2 d.p.)

Step-by-step explanation:

5a² - 2.2 a² = 85 - 30

2.8 a² = 55

a² = 55/2.8

a = +- sqroot(55/8)

a= 2.6220221204 or - 2.6220221204

a = 2.62 or - 2.62 (2 d.p.)

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Can somebody help me pls

meriva

Answer:

The answer is D.

Step-by-step explanation:

Because Chicago and Miami are the only places on the table that are both in North america and are cities.

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3 years ago

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In the following arithmetic number pattern: 5,9,13,17... what is the 100th term?

irakobra [83]

Answer:891

Explanation:
1st term+common difference(desired term-1)

5+4(100-1)
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3 years ago

Which equation is related to the given equation? column a column b 1. 61 + 18 = z 2. z = 61 – 18 3. –18 = 61 – z 4. 18 = 61 – z

Fofino [41]

Question 1.).

Column A.):

Answer ==> z = 61 – 18, is Related to z + 18 = 61, ==> z = 43

Answer: ===> 18 = 61 - z, is Related to z + 18 = 61, ===> z = 43

z + 18 = 61

Let's solve your equation step-by-step.

z + 18 = 61

Step 1: Subtract 18 from both sides.

z + 18 − 18 = 61 − 18

z = 43

Graph: ========> z + 18 = 61 =========> z =======> 43

Column (A), Answer: =======> z = 43

Question 2.).

Column. B.):

Answer: =====> 61 + 18 = z, Related to z - 18 = 61 ====> z = 79 Answer: ===> –18 = 61 – z, Related to z - 18 = 61 ====> z = 79

z - 18 = 61

Let's solve your equation step-by-step.

z − 18 = 61

Step 1: Add 18 to both sides.

z − 18 + 18 = 61 + 18

z = 79

Answer z = 79

Therefore, The answers to your Equation: Column (A),/Column (B)

Question 1.).

Column A.):

Answer ==> z = 61 – 18, is Related to z + 18 = 61, ==> z = 43

Answer: ===> 18 = 61 - z, is Related to z + 18 = 61, ===> z = 43

Question 2.).

Column. B.):

Answer: =====> 61 + 18 = z, Related to z - 18 = 61 ====> z = 79 Answer: ===> –18 = 61 – z, Related to z - 18 = 61 ====> z = 79

Hope that helps!!!!!!!! : )

7 0

3 years ago

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Pl help it’s for a grade

zlopas [31]

Answer:

width = x+2

Step-by-step explanation:

area/length = width

(x^2+9x+14) / (x+7) =?

(x+7)(x+2) / (x+7) = x+2

5 0

2 years ago

Find all the values of x in the set of complex numbers that satisfy the following equation:

Fynjy0 [20]

Compute all the component integrals first:

$I_1=\displaystyle\int_0^{\pi/4}2\sec x\,\mathrm dx=2\ln(\sqrt2+1)$
$I_2=\displaystyle\int_0^2\ln x\,\mathrm dx=2(\ln2-1)$
$I_3=\displaystyle\lim_{a\to\infty}\int_{-a}^a\frac{\mathrm dx}{x^2+1}=\pi$

Now,

$\sqrt2\approx1.4\implies \sqrt2+1\approx2.4$
$\implies \left\lceil I_1\right\rceil=2$

$e$
$\implies\left\lfloor I_2\right\rfloor=-1$

$\pi\approx3.14\implies\left\lceil I_3\right\rceil=4$

So the given equation reduces to

$\displaystyle\sum_{k=-1}^2\frac{\mathrm d}{\mathrm dx}x^{k+2}=1-4!$
$\dfrac{\mathrm dx}{\mathrm dx}+\dfrac{\mathrm dx^2}{\mathrm dx}+\dfrac{\mathrm dx^3}{\mathrm dx}+\dfrac{\mathrm dx^4}{\mathrm dx}=-23$
$4x^3+3x^2+2x+24=0$

a fairly standard cubic. Incidentally, when $x=-2$ , the LHS reduces to 0, so $x+2$ is a factor of the cubic. You can find the remaining two solutions easily with the quadratic formula.

5 0

3 years ago