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3 years ago

AWNSER PLS AM A IDIOT

Mathematics

2 answers:

Sergeeva-Olga [200]3 years ago

5 0

You would use d) power of a power because:

(x^4)^9
= (x^(4*(9))
= x^36

matrenka [14]3 years ago

5 0

The answer would be power of a power so
$(x^4)^9 = x^{4 \times 9} = x^{36}$

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Insert parentheses in expression 2 so that it has a value of 4. Then show why your expression has a value of 4.

Natasha_Volkova [10]

(2^3 +4) = 12

9-6=3

(2^3 +4) /(9-6)
12 /3
4

8 0

4 years ago

Triangle DEF is on a coordinate plane with its

antoniya [11.8K]

Answer:

$21\ \text{square units}$

Step-by-step explanation:

The points are $D(-3,5), E(-3,-2)$ and $F(3,0)$ .

Area of a triangle is given by

$A=\dfrac{D_x(E_y-F_y)+E_x(F_y-D_y)+F_x(D_y-E_y)}{2}$

$\Rightarrow A=\dfrac{-3(-2-0)+-3(0-5)+3(5-(-2))}{2}$

$\Rightarrow A=21\ \text{square units}$

The area of the given triangle is $21\ \text{square units}$ .

7 0

3 years ago

Each marble bag sold by Alonzo's Marble Company contains 3 red marbles for every 5 orange marbles. If a bag has 45 orange marble

Paha777 [63]

45/5=9
9*3=27

so the answer is 27 marbles

5 0

4 years ago

Is a trapezoid always a quadrilateral?

Alona [7]

Answer:

Since a quadrilateral is a shape with four sides, yes it will be a quadrilateral.

Step-by-step explanation:

7 0

3 years ago

A physician wants to develop criteria for determining whether a patient's pulse rate is atypical, and she wants to determine whe

valkas [14]

Answer:

a) 66.1 < μ < 82.7

b) 71.9 < μ < 97.7

c) D. No, because the two confidence intervals overlap, we cannot conclude that the two population means are different.

Step-by-step explanation:

Confidence interval is given by the formula

M±t×( $\frac{s}{\sqrt{N} }$ ) where

M is the sample mean
t is the corresponding t value for 95 confidence level
s is the sample standard deviation
N is the sample size

a. Construct a 95% confidence interval estimate of the mean pulse rate for males.

For men:

M=74.4 t=2.262 s=11.6207 N=10 then confidence interval is:

74.4±2.262×( $\frac{11.6207}{\sqrt{10 } }$ ) ≈ 74.4±8.3

b. Construct a 95% confidence interval estimate of the mean pulse rate for females.

For women:

M=84.8 t=2.262 s=18.0488 N=10 then confidence interval is:

84.8±2.262×( $\frac{18.0488 }{\sqrt{10 } }$ ) ≈ 84.8±12.9

c. Compare the preceding results. Can we conclude that the population means for males and females are different?

Difference of Population means for males and females are not statistically significant, since confidence intervals overlap.

4 0

3 years ago