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3 years ago

Will name the brainliest

Mathematics

2 answers:

nirvana33 [79]3 years ago

7 0

Answer:

where does the name come from?

Step-by-step explanation:

topjm [15]3 years ago

7 0

Answer:

x = 29.69

Step-by-step explanation:

Since the Adjacent side of the given angle 38, is given, and opposite needs to be found out, we will us the Tangent ratio:

Tan(38) = $\frac{x}{38}$

=> To isolate x all by itself, multiply 38 from the right side of "=", on both sides;

Tan(38) * 38 = x

29.69 = x

Hope this helps!

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Kelsey solved the following equation:

Sloan [31]

Answer:

1. Distributive property

2. Combine like terms

3. Addition property of equality

4. Division property of equality

Step-by-step explanation:

7x - ½ ( 8x+ 2 ) = 6 Distribute the -½

7x - 4x - 1 = 6 Combine like terms

3x - 1 = 6 Add 1 on both sides

3x = 7 Divide 3 on both sides

x = 7/3

5 0

3 years ago

Identify the type of transformation given the rule of V(x, y) = (x,y-1)

irina [24]

Hello!

Given the rule of V(x, y) = (x, y - 1), we can determine that it might be a horizontal or vertical shift.

Since we know that x-values are domain and y-values are range, we know that the range of the function is decreasing by 1 (y - 1), so, the entire function is shifting down one unit.

Therefore, the type of transformation given by the rule is a vertical shift/translation downwards by one unit.

7 0

3 years ago

if you are asked to solve a system of equations in which there is no linear equation to start with, you can sometimes begin by i

DENIUS [597]

<u>Answer:</u>

The correct answer option is: True.

<u>Step-by-step explanation:</u>

Its true that if there is no linear equation to start with, you can isolate and substitute a variable that is squared in both the equation.

For example, for the given non linear equation, start by dividing both sides by coefficient of the variable.

Once you do that and isolate a variable, continue solving by substituting that variable into the other equation.

5 0

4 years ago

Plz help me i need it

Mila [183]

Answer: 4

<u>Step-by-step explanation:</u>

f(x) = 4x³ - x² + 1 g(x) = x - 1

g(2) = (2) - 1

= 1

f(1) = 4(1)³ - (1)² + 1

= 4 - 1 + 1

3 0

4 years ago

The amount of time it takes a bat to eat a frog was recorded for each bat in a random sample of 12 bats. The resulting sample me

spin [16.1K]

Answer: a. CI for the mean: 17.327 < μ < 26.473

b. CI for variance: 29.7532 ≤ $\sigma^{2}$ ≤ 170.9093

Step-by-step explanation:

a. To construct a 95% confidence interval for the mean:

The given data are:

mean = 21.9

s = 7.7

n = 12

df = 12 - 1 = 11

1 - α = 0.05

$\frac{\alpha}{2}$ = 0.025

t-score = $t_{0.025,11}$ = 2.2001

Note: since the sample population is less than 30, it is used a t-score.

The formula for interval:

mean ± $t.\frac{s}{\sqrt{n} }$

Substituing values:

21.9 ± 2.200. $\frac{7.7}{\sqrt{12} }$

21.9 ± 4.573

The interval is: 17.327 < μ < 26.473

b. A 95% confidence interval for the variance:

The given values are:

$s^{2}$ = $7.7^{2}$

$s^{2}$ = 59.29

α = 0.05

$\frac{\alpha}{2}$ = 0.025

$1-\frac{\alpha}{2}$ = 0.975

$\chi^{2}_{0.025,11}$ = 21.92

$\chi^{2}_{0.975,11}$ = 3.816

Note: To find the values for $\chi^{2}_{\alpha/2,n-1}$ and $\chi^{2}_{1-\alpha/2,n-1}$ , look for them at the chi-square table

The formula to calculate interval:

( $\frac{(n-1).s^{2}}{\chi^{2}_{\alpha/2,n-1}} , \frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2,n-1}}$ )

are the lower and upper limits, respectively.

Substituing values:

( $\frac{11.59.29}{21.92} , \frac{11.59.29}{3.816}$ )

(29.7532, 170.9093)

The interval for variance is: 29.7532 ≤ $\sigma^{2}$ ≤ 170.9093

6 0

3 years ago