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3 years ago

I don’t understand can someone please help me

Mathematics

1 answer:

alexandr1967 [171]3 years ago

4 0

Answer:

Answer:

Step-by-step explanation:

Answer as Photo

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What is x if 4x-79=3x-29

elena-14-01-66 [18.8K]

4x-79=3x-29

Move the terms with "x" on the left, and the numbers on the right.

4x-3x=79-29
x=50

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3 years ago

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Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to

Ratling [72]

Answer: point estimate = 3.88

Margin of error = 0.63

Step-by-step explanation:

Confidence interval is written in the form,

(Point estimate - margin of error, Point estimate + margin of error)

The sample mean, x is the point estimate for the population mean. Let m represent the margin of error. Since the confidence interval is given as (3.25 , 4.51), it means that

x - m = 3.25

x + m = 4.51

Adding both equations, it becomes

2x = 7.76

x = 7.76/2

x = 3.88

Substituting x = 3.88 into x + m = 4.51, it becomes

3.88 + m = 4.51

m = 4.51 - 3.88

m = 0.63

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2 years ago

The Petri dish shown has no lid. What is the surface area of the outside of the Petri dish?

Nata [24]

Answer: (not enough information) Is there a picture that goes along with the problem?

Step-by-step explanation:

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2 years ago

Slope m = -2 and y -intercept b = -1

algol [13]

Y = -2m -1 is your equation

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3 years ago

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Which of the following exponential functions represents the graph below?

mario62 [17]

Answer:

the graph corresponds to function "D" $f(x)=3\,(\frac{1}{5} )^x$

Step-by-step explanation:

Since the graph shown corresponds to an exponential "decay" (the function decreases as we move from left to right), the base of the exponent has to be a number smaller than 1 (one). So we examine the only two options that give such (options C and D which have fractions as the base - 1/3 and 1/5 respectively)

From there, we analyze which of the two functions satisfies the crossing of the y-axis at (0,3) which is clearly shown in the graph:

We study both:

function C at x = 0 gives:

$f(x)= 5\,(\frac{1}{3})^x\\f(0)=5\,(\frac{1}{3})^0 \\f(0)=5\,(1)\\f(0)=5$

while function D at x = 0 gives:

$f(x)= 3\,(\frac{1}{5})^x\\f(0)=3\,(\frac{1}{5})^0 \\f(0)=3\,(1)\\f(0)=3$

Therefore, the graph corresponds to function "D"

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3 years ago