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Katen [24]
3 years ago
9

HELP PLEASE:(

Mathematics
2 answers:
valentina_108 [34]3 years ago
8 0

Answer:

i need more info

Step-by-step explanation:

Pepsi [2]3 years ago
5 0
The length is 4.5ft.
Explanation...
Perimeter= ( L2 + W2 )
we know that the perimeter is 19ft and the width is 5ft.
19= L2 + 5•2
19= L2 + 10
19-10= 9 (L2)
So divide 9 by 2.
4.5
perimeter is 19, length is 4.5 and the width is five.
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Bond [772]

Answer:

I think option B is correct

7 0
3 years ago
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For what values of h and k does the linear system have infinitely many solutions?
Sophie [7]

Answer:

h=-32 and k=-24

Step-by-step explanation:

4x_1 + 3x_2 = -1:a_1x_1 + b_1x_2=c_1\\hx_1 +kx_2=8:a_2x_1+b_2x_2=c_2

For infinitely many solutions, lines must be same;\frac{a_1}{a_2}=\frac{b_1}{b_2}=\frac{c_1}{c_2}\\\\=\frac{4}{h}=\frac{3}{k}=\frac{-1}{8}\\\\h=-32, k=-24

7 0
3 years ago
Do any body know this need help over here
TiliK225 [7]
The answer It’s either A or B
4 0
2 years ago
Read 2 more answers
A right triangle has an angle that measures 34 and the adjacent side measures 17. What is the length of the hypotenuse to the ne
Mashcka [7]

Answer:

20.5

Step-by-step explanation:

Let's label the vertices ABC as in the diagram below. Then

Data:

α = 34 °

β = 90 °

c = 17

Calculation:

cosα = AB/AC

Multiply each side by AC

ACcosα = AB

Divide each side by cosα

AC = AB/cosα = 17/cos34 ≈ 17/0.8290 ≈ 20.5

8 0
3 years ago
The power takeoff driveline on tractors used in agriculture is a potentially serious hazard to operators of farm equipment. The
Roman55 [17]

Answer:

(a) Both populations are Normally distributed.

Step-by-step explanation:

Hello!

There are two types of shields in older tractors, bolt-on shield, and flip-up shield. The researcher wants to study the proportion of older tractors whose shields were removed. For these two random samples where taken, one of older tractors with bolt-on shields and the other one of older tractors with flip-up shields, the number of tractors whose shields were removed was recorded in both groups.

Sample 1: bolt-on

nb= 183

xb= 35 with removed shields

pb'= 35/183= 0.19

Sample 2: flip-up

nf= 136

xf= 15 with removed shields

pf'= 15/136= 0.11

Statistic hypotheses:

H₀: pb=pf

H₁: pb≠pf

(a) Both populations are Normally distributed. d) The counts of successes and failures are large enough to use Normal calculations.

The populations are not normal, these are two binomial populations.

To be able to use the normal calculations the following conditions should be met:

Population 1

n₁≥30 ⇒ nb= 183

n₁*p₁'≥5 ⇒ nb*pb'= 183*0.19= 34.77

n₁*(1-p₁')≥5 ⇒ nb*(1-pb')= 183*(1-0.19)= 148.23

Population 2

n₂≥30 ⇒ nf= 136

n₂*p₂'≥5 ⇒ nf*pf'= 136*0.11= 14.96

n₂*(1-p₂')≥5 ⇒ nf*(1-pf')= 136*(1-0.11)= 121.04

(b) The data come from two independent samples (c) Both samples were chosen at random.

Both conditions are met, the samples are randomly selected, the randomization included in the sampling method guarantees the independence between the samples.

(e) Both populations are at least 10 times the corresponding sample sizes

Without the information regarding the populations, you'll have to assume that the population of old tractors with bolt-on shields is greater than 1830 and the population of old tractors with flip-up shields is greater than in 1360.

I hope this helps!

5 0
3 years ago
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