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2 years ago

Can someone give me the answer? I’m really confused

Mathematics

1 answer:

Damm [24]2 years ago

7 0

1 pound of rice costs $3.45

1.2 pounds of rice costs x

Set up the proportion

1 / 1.2 = 3.45 / x Cross Multiply

x = 1.2 * 3.45 Combine

x = $4.14 Answer

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Help please

lord [1]

Answer:

Functions evaluated at x = -1

A. a(-1) = -2(-1) + 3 = 5

B. b(-1) = 0 (as per graph)

C. Find the equation first:

m = 4/8 = 1/2
c(x) = 1/2x - 4
c(-1) = -1/2 - 4 = -4.5

D. d(-1) = (-1)² - 4 = -3

E. e(-1) = 2 (as per table)

F. f(-1) = 5/2 = 2.5 (as per graph)

G. g(-1) = 2(3)⁻¹ - 2 = 2/3 - 2 = - 1 1/3

H. h(-1) = 2 (as per table)

The order:

C >> D >> G >> B >> E and H >> F >> A

8 0

3 years ago

Someone Please help me answer this question.

Shalnov [3]

∠C is 148°.

Step-by-step explanation:

Step 1: Given ∠A = 16° and ∠B = (10x - 64)°. Also, AC = BC. Now, the angles opposite to equal sides of a triangle are equal. So ∠B = 16°
Step 2: Sum of angles of a triangle is 180°

⇒ 16° + 16° + ∠C = 180°

⇒ ∠C = 180 - 32 = 148°

6 0

3 years ago

ind the value of the test statistic z using z equals StartFraction ModifyingAbove p with caret minus p Over StartRoot StartFract

Sergeeva-Olga [200]

Answer:

$z=\frac{0.262 -0.25}{\sqrt{\frac{0.25(1-0.25)}{530}}}=0.638$

Step-by-step explanation:

Data given and notation

n=530 represent the random sample taken

X=139 represent the yellow pods in the random sample

$\hat p=\frac{139}{530}=0.262$ estimated proportion of yellow pods

$p_o=0.25$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the true proportion is 0.25 or 25%:

Null hypothesis: $p=0.25$

Alternative hypothesis: $p \neq 0.25$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .