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3 years ago

Chain at a hardware store costs $0.15 per foot. If you purchased $1.23 of chain, what length of chain did you buy?

Mathematics

1 answer:

Paul [167]3 years ago

4 0

.15 * 8= 1.20

.15 * 1/5= .03

1.20 + 0.03= 1.23

Answer: 8.2

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SBC is an isosceles triangle with main vertex S.

stira [4]

Answer + Step-by-step explanation:

1) D be the symmetric of B with respect to C then CD = BC

A the symmetric of C with respect to B then AB = BC

We obtain :

CD = BC

AB = BC

Then AB = CD

2) m∠SBA = 180 - SBC = 180 - SCB = m∠SCD

3) we have :

BA = CD

BS = CS

m∠SBA = m∠SCD

Then

the triangles SBA and SCD are congruent

the triangles SBA and SCD are congruent Then SA = SD

Therefore SAD is an isosceles triangle.

4 0

1 year ago

Write this number in words form 3,388,198

Gwar [14]

Three million, three hundred eighty-eight thousand, one hundred ninety-eight

8 0

2 years ago

Read 2 more answers

Anyone know this answer I will give you 28 point.

maks197457 [2]

Answer:

V to X = 68mi

X to W = 50mi

V to W = will be 68mi too

Step-by-step explanation:

note ; it's a triangle*

5 0

2 years ago

Graph: y is less than or equal to -1/3x + 4

mr_godi [17]

The equation looks like this

y≤ -1/3x + 4

And it looks like

6 0

2 years ago

Refer to the previous exercise. The researchers wanted a sufficiently large sample to be able to estimate the probability of pre

Maru [420]

Answer:

The large sample n = 117.07

Step-by-step explanation:

Step(i):-

Given that the estimate error (M.E) = 0.08

The proportion (p) = 0.75

q =1-p = 1- 0.75 =0.25

Level of significance = 0.05

Z₀.₀₅ = 1.96≅ 2

Step(ii):-

The Marginal error is determined by

M.E = $\frac{Z_{0.05} \sqrt{p(1-p)} }{\sqrt{n} }$

$0.08 = \frac{2 X \sqrt{0.75(1-0.75)} }{\sqrt{n} }$

Cross multiplication , we get

$\sqrt{n} = \frac{2 X \sqrt{0.75(1-0.75)} }{0.08 }$

√n = $\frac{2 X0.4330}{0.08} = 10.825$

squaring on both sides , we get

n = 117.07

Final answer:-

The large sample n = 117.07

6 0

2 years ago