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3 years ago

Find the value of the following (-42) + 15 + (-63) can someone say this and fast

Mathematics

2 answers:

Karolina [17]3 years ago

6 0

$\\ \sf\longmapsto (-42)+15+(-63)$

$\\ \sf\longmapsto -42+15+(-63)$

$\\ \sf\longmapsto -27+(-63)$

$\\ \sf\longmapsto -27-63$

$\\ \sf\longmapsto -90$

Alexxandr [17]3 years ago

6 0

Answer:

42 + 15 + (-63) = -90

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

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3 octagons 4 Pentagons 2 trapezoids how many sides are on the shapes altogether

klio [65]

Answer:

52 Sides

Step-by-step explanation:

Octagons have 8 sides so 3 x 8 = 24

Pentagons have 5 sides so 4 x 5 = 20

Trapezoids have 4 sides so 2 x 4 = 8

Add it all up and it equals 52 sides in total

8 0

4 years ago

Through: (-2, -1), slope = 3

DanielleElmas [232]

Answer:

y =3x + 5

Step-by-step explanation:

The slope intercept form of an equation is expressed as;

y = mx+c

m is the slope

c is the intercept

Get the intercept

Substitute m = 3 and (-2,-1) into y = mx+c

-1 = 3(-2)+c

-1 = -6 + c

c = -1+6

c = 5

Get the equation.

Recall that y = mx+c

y =3x + 5

This gives the required equation

3 0

3 years ago

The editor of a textbook publishing company is deciding whether to publish a proposed textbook. Information on previous textbook

kogti [31]

Answer:

34.86% probability that it will be huge success

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

$P(B|A) = \frac{P(B)*P(A|B)}{P(A)}$

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question:

Event A: Receiving a favorable review.

Event B: Being a huge success.

Information on previous textbooks published show that 20 % are huge successes

This means that $P(B) = 0.2$

99 % of the huge successes received favorable reviews

This means that $P(A|B) = 0.99$

Probability of receiving a favorable review:

20% are huge successes. Of those, 99% receive favorable reviews.

30% are modest successes. Of those, 70% receive favorable reviews.

30% break even. Of those, 40% receive favorable reviews.

20% are losers. Of those, 20% receive favorable reviews.

Then

$P(A) = 0.2*0.99 + 0.3*0.7 + 0.3*0.4 + 0.2*0.2 = 0.568$

Finally

$P(B|A) = \frac{P(B)*P(A|B)}{P(A)} = \frac{0.2*0.99}{0.568} = 0.3486$

34.86% probability that it will be huge success

4 0

3 years ago

Help me plz quick my phone about to die

konstantin123 [22]

I'll do the first graph.

We can easily find the y intercept by inputting 0 for x.

y = -2(0) + 7
y = 7

The y-intercept is (0, 7)

To find the x intercept, isolate x.

y = -2x + 7
Add 2x to both sides.
2x + y = 7
Subtract y from both sides.
2x = -y + 7
Divide by 2 on both sides.
x = -1/2y + 3.5

Input 0 for y.

x = -1/2(0) + 3.5
x = 3.5

The x intercept is (3.5, 0)

Now try the rest own your own! :)

5 0

4 years ago

Find the Tangent of Angle C Find the tangent of ZC. C 8 A 15 17

iren [92.7K]

Answer:

15/8

Step-by-step explanation:

tanC = opposite/adjacent = 15/8

4 0

2 years ago