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3 years ago

How do you solve this

Mathematics

1 answer:

mina [271]3 years ago

5 0

Answer:

D. The m<4 is 137°

$< 4 = 180 \degree - 43 \degree \\ < 4 = 137 \degree$

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I need help ASAP please

dsp73

Answer:

65 degrees

Step-by-step explanation:

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3 years ago

What is the area of these shapes

Llana [10]

Answer. 1: 6x3x3 = 54.

2:6 x 4 = 24 11x 4 =44 44 + 24 =68

Step-by-step explanation: ur welcome

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2 years ago

Rainwater was collected in water collectors at thirty different sites near an industrial basin and the amount of acidity (pH lev

stiv31 [10]

Answer:

The mean and standard deviation of the corrected pH measurements are 6.63 and 3.8025 respectively.

Step-by-step explanation:

We can correct the values of the mean and standard deviation using the properties of the mean and the variance.

To the original value X we have to add 0.2 and multiply then by 1.3 to calculate the new and corrected value Y:

$Y=1.3(X+0.2)$

The mean and standard deviation of the original value X are 4.9 and 1.5 respectively.

Then, we can apply the properties of the mean as:

$E(Y)=E(1.3(X+0.2))=1.3E(X+0.2)=1.3E(X)+1.3*0.2\\\\E(Y)=1.3E(X)+0.26\\\\E(Y)=1.3*4.9+0.26=6.37+0.26=6.63$

For the standard deviation, we apply the properties of variance:

$V(Y)=V(1.3(X+0.2))\\\\V(Y)=1.3^2\cdot V(X+0.2)\\\\V(Y)=1.69\cdot V(X)\\\\V(Y)=1.69\cdot 1.5^2=1.69\cdot 2.25=3.8025$

The properties that have been applied are:

$1.\,E(aX)=aE(X)\\\\ 2.\,E(X+b)=E(X)+b\\\\3.\,V(aX)=a^2V(X)\\\\4.\,V(X+b)=V(X)+0$

3 0

3 years ago

Which of the following points (x,y) lies on the graph of 8x + 2y=24

scZoUnD [109]

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
x-intercept - (3,0)
y-intercept - (0,12)

Slope: -4
Y-intercept: 12

3 0

3 years ago

Read 2 more answers

Given: ∆ABC ≅ ∆DEF<br> Find: AB and m∠F

Sindrei [870]

AB = 14

m∠F = 39°

Well the explanation here is simple.

Since the given states that the two triangles, ΔABC and ΔDEF, are congruent, they must have congruent/corresponding parts.

So AB is the same as DE which measures 14, so therefore AB must measure 14.

The same explanation goes to m∠F, ∠C is congruent to ∠F so it must measure 39° too.

3 0

3 years ago