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3 years ago

Can someone help me with this one ....

Mathematics

1 answer:

iris [78.8K]3 years ago

3 0

Answer:

-5, - 2, 3

Step-by-step explanation:

y=2x+3, y=-7, x=-5; y=-1, x=-2, y=9, x=3

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Given the figure below, find the values of x and z. (5x + 86) (10x + 34) X = Z=

kolezko [41]

Answer:

$x = 4 \\ z = 106$

Step-by-step explanation:

$(5x + 86) + (10x + 34) = 180 \\ 15x + 120 = 180 \\ 15x = 180 - 120 \\ 15x = 60 \\ \\ x = \frac{60}{15} \\ \\ x = 4$

$(5x + 86) = 5(4) + 86 = 20 - 86 = 106$

Z= 106 —> Opposite angles

I hope I helped you^_^

8 0

2 years ago

The area of a pizza is 220 square centimeters .

Zanzabum

Area of pizza = pi × r^2
pi × r^2 = 220 Sq. cm
22/7 × r^2 =220
r^2 = 220 × 7/22
r^2 = 70
r = square root of 70
r = 8.36

therefore , radius of the pizza is 8.36 cm

(please do mark as brainliest)

7 0

3 years ago

What does the point (2,24) represent?

almond37 [142]

Answer:

not sure what you mean here but..... 2 represents your x value which will go on the x intercept. And 24 represents your y value. When you have both of these values, you can plot it on a coordinate graph.

4 0

3 years ago

Find the slope of each line. А B с A) A B) C)

cluponka [151]

Answer: Ola

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

6. A car dealership would like to estimate the mean mpg of its new model car with 90% confidence. The population is normally dis

Yakvenalex [24]

Answer:

92.9997< $\mu$ <99.5203

Step-by-step explanation:

Using the formula for calculating the confidence interval expressed as:

CI = xbar ± Z * S/√n where;

xbar is the sample mean

Z is the z-score at 90% confidence interval

S is the sample standard deviation

n is the sample size

Given parameters

xbar = 96.52

Z at 90% CI = 1.645

S = 10.70.

n = 25

Required

90% confidence interval for the population mean using the sample data.

Substituting the given parameters into the formula, we will have;

CI = 96.52 ± (1.645 * 10.70/√25)

CI = 96.52 ± (1.645 * 10.70/5)

CI = 96.52 ± (1.645 * 2.14)

CI = 96.52 ± (3.5203)

CI = (96.52-3.5203, 96.52+3.5203)

CI = (92.9997, 99.5203)

Hence a 90% confidence interval for the population mean using this sample data is 92.9997< $\mu$ <99.5203

4 0

3 years ago

Can someone help me with this one ....​

Can someone help me with this one ....