MATHEMATICS HIGH SCHOOL

Solve -2 - 3/7b = 4. Check your SOLUTION

Answers

Answer 1

Answer:

Step-by-step explanation:

-2 -3/7b = 4

-2-4 = 3/7b

-6 = 3/7b

3/7b = -6

b = (-6)×7/3

b = -14

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How do i solve this A=1/2bh for b

Edie can paint a wall in 3 hours. Dan can paint the same wall in 6 hours. if they work together, how many hours will it take Edie and Dan to paint the wall?A.
1 hour

B.
1.5 hours

C.
2 hours

D.
4.5 hours

Answers

Eddie can paint 1/3 in an hour
Dan can paint 1/6 wall in an hour

2/6 + 1/6 = 1/2
Together, they can paint 1/2 wall in an hour

1/2 x 2 = 2
Therefore they would paint the whole wall in 2 hours, so the answer's C.

if a scale map is 1 cm: 15 Km. find the actual distance corresponding to the scale map. 13) 2.5 cm 14) 0.2 cm 15) 15 cm 16) 4.6 cm

Answers

All you gotta do is multiply the cm by 15,
For 13) you'd do $2.5*15$
14) $0.2*15$
15) $15*15$
then for 16) $4.6*15$

Let

x-------> distance in the map in cm

y-------> actual distance in Km

we know that

$Scale\ Map=(x)/(y) \n \n Scale\ Map=(1)/(15)(cm)/(Km)$

$(x)/(y)=(1)/(15)$

$y=15x$ --------> equation $1$

Part 13) find the actual distance corresponding to the scale map $2.5\ cm$

In this problem we have

$x=2.5\ cm$

Substitute the value of x in the equation $1$ to find the actual distance

$y=15*2.5=37.5\ Km$

therefore

the answer part 13) is

the actual distance is $37.5\ Km$

Part 14) find the actual distance corresponding to the scale map $0.2\ cm$

In this problem we have

$x=0.2\ cm$

Substitute the value of x in the equation $1$ to find the actual distance

$y=15*0.2=3\ Km$

therefore

the answer part 14) is

the actual distance is $3\ Km$

Part 15) find the actual distance corresponding to the scale map $15\ cm$

In this problem we have

$x=15\ cm$

Substitute the value of x in the equation $1$ to find the actual distance

$y=15*15=225\ Km$

therefore

the answer part 15) is

the actual distance is $225\ Km$

Part 16) find the actual distance corresponding to the scale map $4.6\ cm$

In this problem we have

$x=4.6\ cm$

Substitute the value of x in the equation $1$ to find the actual distance

$y=15*4.6=69\ Km$

therefore

the answer part 16

the actual distance is $69\ Km$

ABCD is a rectangle. find m <AEB

Answers

Answer:

$\Rightarrow m\angle AEB=130^(\circ)$

Step-by-step explanation:

As ABCD is a rectangle. So each angle of the rectangle is 90° and $m\angle EAD=65^(\circ)$ , so

$m\angle EAB=90^(\circ)-65^(\circ)=25^(\circ)$

The diagonals of the rectangle bisects each other. Hence,

$\Rightarrow AE=BE$

In a triangle if two sides are equal then the angles opposite them will be equal.

So in triangle AEB,

$m\angle EBA=m\angle EAB=25^(\circ)$

As the sum of the angles in a triangle adds up to 180°, so

$\Rightarrow m\angle EBA+m\angle EAB+m\angle AEB=180^(\circ)$

$\Rightarrow m\angle AEB=180^(\circ)- m\angle EBA-m\angle EAB$

$\Rightarrow m\angle AEB=180^(\circ)-25^(\circ)-25^(\circ)=130^(\circ)$

The cost of 3 pounds of almonds is $8.58. What is the cost of cherries per
pound?

Answers

Answer:

$2.86

Step-by-step explanation:

you just need to do 8.58/3

Evaluate f(x) = X(With an exponent of 2) -3x +2, given f(x + 1).

Answers

Answer:

f(x + 1) = x² - x

Step-by-step explanation:

f(x) = x² - 3x + 2 when f(x + 1)

f(x + 1) = (x + 1)² - 3(x + 1) + 2

f(x + 1) = (x² + 2x + 1) + (-3x - 3) + 2

f(x + 1) = x² - x + 0

f(x + 1) = x² - x

Best of Luck!

Simplify 4 + (−3) − 2 × (−6)

Answers

Keywords:

Simplify, expression, order of operation, PEMDAS

For this case we must simplify the given expression, we must take into account the order of operation (sequence in which operations must be performed) known as PEMDAS:

P: Parentesis

E: Exponents

M: Multiplication

D: Division:

A: Addition

S: Subtraction

In the given expression, we see that we have multiplication and addition, according to the PEMDAS rule, we must first do the multiplication:

So:

$4 + (-3) - 2 * (-6) =$