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3 years ago

-3.5x + 8.5x - 4 =26

Mathematics

2 answers:

WITCHER [35]3 years ago

3 0

Answer:

x = 6

Step-by-step explanation:

-3.5x + 8.5x - 4 = 26

-3.5 + 8.5x = 26 + 4

5.0x = 30

x = 30/5

x = 6

Alex_Xolod [135]3 years ago

3 0

Answer:

x=6

Step-by-step explanation:

First, add -3.5x and 8.5x to combine like terms, which would then look like 5x-4=26.

Next, add 4 to both sides of the equation, which would then be 5x=30.

Finally, divide both sides of the equation by 5 and then simplify.

The final answer would be x=6.

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A lottery ticket has a grand prize of $31 million. The probability of winning the grand prize is .000000018. Determine the expec

vlabodo [156]

Answer:

$0.558

Step-by-step explanation:

The expected value is the sum of the value of each outcome times the chance that it happens. In this case, there are two outcomes:

Win $31 million
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Then our expected value can be calculated as:

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3 years ago

Javier asks his mother how old a tree in their yard is. His mother says, "The sum of 10 and two-thirds of that tree's age, in ye

Sloan [31]

Answer:

His error is adding 10 and 2/3 before multiplying by a(age of the tree)

Step-by-step explanation:

The sum of 10 and two-thirds of that tree's age, in years, is equal to 50.

Correct equation

Sum = addition (+)

two-thirds = 2/3

The tree's age = a

10 + 2/3a = 50

2/3a = 50 - 10

2/3a = 40

a = 40 ÷ 2/3

= 40 × 3/2

= 60

a = 60 years

Javier writes the equation

(10 + two-thirds) a = 50

(10 + 2/3)a = 50

(30+2/3)a = 50

32/3a = 50

a = 50 ÷ 32/3

= 50 × 3/32

= 150/32

a = 150/32

His error is adding 10 and 2/3 before multiplying by a(age of the tree)

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3 years ago

What is 4-6+8 divided by 2+3-7+63times 3535

zvonat [6]

Answer:

-754.13

Step-by-step explanation:

Calculator

3 0

3 years ago

Read 2 more answers

HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP A

DochEvi [55]

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3 years ago

4. Given directed line segment CD, if point E divides CD three-fourths of the way from C to D, find the coordinates of E, then p

cricket20 [7]

Answer:

Point E is given by $\left ( \frac{3mx_1+4x_0}{7},\frac{3y_1+4y_0}{7} \right )$

Step-by-step explanation:

Let points C and D be $(x_0,y_0),\,(x_1,y_1)$ and let point E divides it in ratio $m:n$ .

Then coordinates of point E are given by $\left ( \frac{mx_1+nx_0}{m+n},\frac{my_1+ny_0}{m+n} \right )$

Put $m:n=3:4$

Point E is given by $\left ( \frac{3mx_1+4x_0}{3+4},\frac{3y_1+4y_0}{3+4} \right )=\left ( \frac{3mx_1+4x_0}{7},\frac{3y_1+4y_0}{7} \right )$

Now plot point E.

Download pptx

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3 years ago