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djverab [1.8K]
3 years ago
11

Please send ans in full​

Mathematics
2 answers:
Katen [24]3 years ago
7 0

Area of rectangle = l × b

l = 70cm

b = 8cm

Area = 70 × 8 = 560cm²

Area of rectangle = l × b

l = 78cm

b = 15cm

Area = 78 × 75 = 1170cm²

DanielleElmas [232]3 years ago
6 0

Answer:

Area of rectangle = l × b

Step-by-step explanation:

l =10 cm

b = 8 cm

Now ,

Area of rectangle = l × b

= 10 cm × 8 cm

= 80 cm^2

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What is the factored form of the expression?<br><br> d^2 = 36d + 324
Veseljchak [2.6K]

Answer:

(x-43.45)(x+7.45)=0

Step-by-step explanation:

We have the quadratic equation d^{2}=36d+324  i.e. d^{2}-36d-324=0

As, the roots of the quadratic equation ax^{2}+bx+c=0 are given by x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}.

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}, we get,

x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}

i.e. x=\frac{36\pm \sqrt{1296+1296}}{2}

i.e. x=\frac{36\pm \sqrt{2592}}{2}

i.e. x=\frac{36\pm 50.9}{2}

i.e. x=\frac{36+50.9}{2}  and x=\frac{36-50.9}{2}

i.e. x=\frac{86.9}{2}  and x=\frac{-14.9}{2}

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be (x-43.45)(x+7.45)=0

3 0
3 years ago
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Aliun [14]

Answer:

-01/0/0.8/1.2/1.6

Step-by-step explanation:

3 0
3 years ago
Find the mean, median, and mode 77, 92, 80, 92. Please explain how you got your answer.​
vaieri [72.5K]

Answer:

The mean is 85.25

The medium is 86

The mode is 92

Step-by-step explanation:

The mean is all the numbers added divided by the number of values.

77 + 92 + 80 + 92 divided by 4

341 divided by 4 = 85.25

The median is the middle number

92 + 80 divided by 2

172 divided by 2 = 86

The mode is the number that occurs the most which is 92.

3 0
3 years ago
Pls help I’ll brainlest <br><br> Complete the activities below
DanielleElmas [232]

Answer:

Step-by-step explanation:

( x_{1} , y_{1} )

( x_{2} , y_{2} )

rate of change or slope m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} } = \frac{rise}{run}

y = mx + b

"b" is y-intercept

~~~~~~~~~~~~~~~~~~~

7 0
2 years ago
A production line operation is designed to fill cartons with laundry detergent to a mean weight of 32 ounces. A sample of carton
IgorLugansk [536]

Answer:

Step-by-step explanation:

a) The null hypothesis states that

The production line operation fills cartons with laundry detergent to a mean weight of 32 ounces.

H0 : µ = 32

The alternative hypothesis states that

The production line operation overfills or under fills cartons with the laundry detergent to a mean weight of above or below 32 ounces.

Ha : µ ≠ 32

b) when the calculations are done and the p value is determined, then it would be compared with the level of significance

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c) When the significance level is greater than the p value, we would reject H0 because there is sufficient evidence to conclude that the production line operation overfills or under fills cartons.

4 0
3 years ago
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