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gulaghasi [49]
3 years ago
5

The range of F(x) = 7 • 4^x is all positive real numbers. True or False

Mathematics
1 answer:
ANEK [815]3 years ago
6 0
This statement is true
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Jasmine needs 300cm of fabric to make her new dress. The fabric costs $5 for each METER. How much will her fabric cost to make?​
drek231 [11]

Answer:

$15

Step-by-step explanation:

Step 1:

300cm = 3m

Step 2:

$5 per 1m

Step 3:

$5 × 3

Answer:

$15

Hope This Helps :)

7 0
3 years ago
HELP ASAP!!!!!!!
Musya8 [376]

I believe the correct option is C.

8 0
3 years ago
The legs of a right triangle are 18 centimeters and 80 centimeters long. What is the length of the hypotenuse
Brilliant_brown [7]
a^2 + b^2 = c^2\\\\18^2 + 80^2 = c^2\\\\6724 = c^2\\\\c = \sqrt{6724}\\\\ c = 82

The hypotenuse is 82 centimeters long.
4 0
3 years ago
Read 2 more answers
Assume a researcher recruits 150 African American and Caucasian individuals taking warfarin to determine if there is a differenc
Anettt [7]

Answer:

Z=11.0

Step-by-step explanation:

Let Caucasian individuals be the population 1 and African American be the population 2. So, we are given that

n=150

n1=75

mean1=xbar1=6.1.

standard deviation1=S.D1=σ1=1.1.

Variance1=V(x1)=σ1²=1.1²=1.21.

n2=75.

mean2=xbar2=4.3.

standard deviation2=S.D2=σ2=0.9.

Variance2=V(x2)=σ2²=0.9²=0.81.

The z-statistic is

Z=\frac{xbar1-xbar2}{\sqrt{\frac{V(x1)}{n1}+ \frac{V(x2)}{n2} } }

Z=\frac{6.1-4.3}{\sqrt{\frac{1.21}{75}+ \frac{0.81}{75} } }

Z=\frac{1.8}{\sqrt{0.0161+ 0.0108 } }

Z=\frac{1.8}{\sqrt{0.0269 } }

Z=\frac{1.8}{0.164 } }

Z=10.97

Z=11.0

So, the z value obtained while calculating the test statistic is approximately 11.0.

4 0
3 years ago
What is the surface area of a square pyramid with a base side lengths of 10 inches and a slant height of 14 inches
miskamm [114]

You could find the surface area using two different methods, but coming out with the same answer.

Method One: This method involves using an equation that helps finding the surface area for a square pyramid.

The equation: A+(1/2)ps=SA; we should break down what the letters stand for. A=Area of the base; the area of the base is 10×10=100 P= perimeter of the base; 10×4=40 S= Slant height;14

Let's put these values into the equation and find the surface area. 100+(1/2)(40)(14)=100+(20)(14)=100+280=380 The surface area is 380 in².

Method Two: The picture below shows how to lay out the square pyramid so you can find the area of each the shapes, then add them up. There are four triangles and a square.

Triangles: We use the equation (1/2)BH; let's plug the values in. 1/2(10)(14)=1/2(140)=70; there are four triangles, so let's multiply by four to find the area of all four of them triangles together. 70×4=280

Square: It's the side length squared. 10²=100; let's add everything together.

The four triangles+the square= the surface area

280+100=380

So, the surface area is 380 in².

4 0
3 years ago
Read 2 more answers
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