Mathematics High School

Solve for a.

a + (−5) = 12

Answers

Answer 1

Answer:

a = 17

Step-by-step explanation:

a + (-5) = 12

Open the bracket;

a - 5 = 12

Add 5 to both sides

a - 5 + 5 = 12 + 5

Therefore,

a = 17

Answer 2

Answer:

a=17

Step-by-step explanation:

any number plus a negative number is basically subtracting the absolute value of the negative number. so 12 + 5 = 17

Related Questions

v=u + at
u= 2
a = -5
t = 1/2
Work out the value of v.

Answers

Answer: -1/2

Step-by-step explanation:

V=2+(-5)*1/2

Answer:

V=u+at

=2+(-5)/0.5

= - 3/0.5

V=-6

then find the measure of both angles??

Answers

Answer:

i so sory i dont know :(

Step-by-step explanation:

when calculating probability, we give our answers as a

Answers

Answer:

Step-by-step explanation:  work

Francisco forgot to pay the $50 water bill. The company charges you a 14% fine. How much does Francis have to pay including the fine?

Answers

$57

.14 x 50 = 7 , + the 50

Plz give me ans.




When.



....

Answers

Answer:

Step-by-step explanation:

Length : Breadth : height = 3 : 4 : 6

Length = 3x

Breadth = 4x

Height = 6x

Volume of cuboid = 576 sq.cm

length * breadth * height = 576

3x * 4x * 6x = 576

       72x³   = 576

             x³ = 576/72

            x³ =   8

            x³ = 2³

x = 2

Length = 3*2 = 6 cm

Breadth = 4* 2 = 8 cm

Height = 6*2 = 12 cm

Total surface area = 2*(lb + bh + hl)

                             = 2 * (6*8 + 8*12 + 12*6)

                            = 2 * (48 + 96 + 72)

                            = 2 * 216

                            = 432 sq.cm

Suppose two trains, say A and B are initially 125 miles apart on the same east-west track. Train A is initially to the west of train B. Train A begins to head due east at 25 mph, and train B begins to head due west at 20 mph. To the nearest minute, how long will it take for the two trains to collide?

Answers

Answer:

[tex]167\ \text{minutes}\text{ or }166\ \text{minutes}\ \text{and}\ \text{40}\ \text{seconds}[/tex]

Step-by-step explanation:

Distance between the two trains is 125 miles.

So, when they will collide they would have covered a distance of 125 miles together.

The time that will pass for both the trains will be same but the distances covered will be different as their speeds are different.

[tex]\text{Distance}=\text{Speed}\times \text{Time}[/tex]

[tex]25t+20t=125\\\Rightarrow t=\dfrac{125}{45}\\\Rightarrow t=\dfrac{25}{9}\ \text{hours}=\dfrac{25}{9}\times 60\times 60=10000\ \text{s}=166.67\ \text{minutes}\\\approx 167\ \text{minutes}\\=166\ \text{minutes}\ \text{and}\ \text{40}\ \text{seconds}[/tex]

[tex]167\ \text{minutes}\text{ or }166\ \text{minutes}\ \text{and}\ \text{40}\ \text{seconds}[/tex]

Its not a quiz/test its homework thats due in a bit :)
Just to clear any misunderstandings that might arise

Answers

Answer:

it would be 53

Step-by-step explanation:

The answer is 53 glad to help

Pls will mark brainliest if right!
Determine if the conditions stated would result in a unique quadrilateral?
A. a trapezoid with three 12-yd sides (yes or no)
B. a rhombus with a perimeter of 36 ft. and one right angle (yes or no)
C. a quadrilateral with four 9-ft. sides and two acute angles (yes or no)
D. a rectangle with a length that is 5-inch. less than width
C. a parallelogram with a right angle, two 7-mm and two 8-mm sides

Answers

Answer:

A) no

B) yes

C) no

D) yes

E) yes

Step-by-step explanation:

60% of the students in the marching band are girls there are 30 girls in a marching band how many students are there altogether?

Answers

Answer: 50

Step-by-step explanation: 60 divided by 30= 2 this means that 1 kid equals two percent 100 percent minus 60 percent= 40 percent 40 divided by 2= 20

20 plus 30= 50 so 50 kids are in the marching band

Find the slope of the line. Write your answer in simplest form.

Answers

-1/2 because the rise over run is -3/6 and simplified its -1/2

Work out 23% of 42.
Give your answer correct to 1 decimal place.

Answers

23% x 42
reduce the numbers
23/100 x 42
you then calculate
23/50 x21 the answer will be 483/50 and in decimal point it’s 9.66

The value of 23 % of 42 is 9.7

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the number be A = 42

Now , let the percentage of the number A = 23 %

And , the equation will be

The 23 % of the number be = y

So , y = 23 % of 42

And , the equation is

y = ( 23 / 100 ) x 42

y = 0.23 x 42

On simplifying the equation , we get

y = 9.66

y ≈ 9.7

Therefore, the value of y is 9.7

Hence , The value of 23 % of 42 is 9.7

To learn more about equations click :

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If we all draw a triangle using the same three side lengths, will we all draw exactly the same triangle?

Answers

I JUST WANT POINTS /\ /\

_

technically yes? because we’re given the measurements we have to have!


Rena's rowboat drifts 23 feet from shore,
followed by 9 more feet. The rowboat's current
position can be represented by -23 + (-9). What
integer represents the rowboat's position?

Answers

Answer: 23 + 9 = 32

Step-by-step explanation:

For every 6 packages Cindy wraps, she uses 1.5 rolls of wrapping paper. If she uses 6 rolls, how many packages has she wrapped?

Answers

Answer:

for every 3 packages, she uses 1/2 a roll of wrapping paper

if she uses 2 1/2 rolls.....

(2 1/2) / (1/2) ....* 3

(5/2) / (1/2).....* 3

(5/2 * 2) * 3

5 * 3 =

15 packages <===

Step-by-step explanation:

Answer:

24 packages

Step-by-step explanation:

6/1.5 = 4

4 x 6 = 24

geometry: pls help :(

Answers

AC=64
CF=32
DF=28
this should be right:)

You can add ________ without changing either fraction's denominator.

A
1/3 and 1/2

B
3/7 and 4/5

C
2/3 + 2/5

D
2/5 and 3/5

Answers

Answer:

D I believe (so 2/5 and 3/5)

Answer:

D

Step-by-step explanation:

Because D has same dominator and you don’t change dominator when adding fractions

Hope this helps.

Mark brainliest if it help.

y = 5x – 2
y = x + 6
What’s the Solutions

Answers

Solve equation [2] for the variable y


[2] y = x + 6

// Plug this in for variable y in equation [1]

[1] (x +6) - 5x = 2
[1] - 4x = -4
// Solve equation [1] for the variable x


[1] 4x = 4

[1] x = 1
// By now we know this much :

y = x+6
x = 1
// Use the x value to solve for y

y = (1)+6 = 7
Solution
{y,x} ={7,1}

Krutika and Natasha win some money and share it in the ratio 4:3. Krutika gets £7 more than Natasha. How much did they get altogether?

Answers

Answer:

49

Step-by-step explanation:

The computation of the total amount is shown below:

Let us assume the natasha be 4x

And, the krutika be 3x

Now as per the situation

4x = 3x + £7

x = £7

For natasha = 4(7) = 28

For krutika = 3(7) = 21

So, the total amount is

= 28 + 21

= 49

Find f^-1(x) where
f(x) = 3x+2/x

Answers

Given:

Consider the function is

[tex]f(x)=\dfrac{3x+2}{x}[/tex]

To find:

The inverse of the function, .i.e., [tex]f^{-1}(x)[/tex].

Solution:

We have,

[tex]f(x)=\dfrac{3x+2}{x}[/tex]

Putting f(x)=y, we get

[tex]x=\dfrac{3y+2}{y}[/tex]

Isolate the variable y.

[tex]xy=3y+2[/tex]

[tex]xy-3y=2[/tex]

[tex]y(x-3)=2[/tex]

[tex]y=\dfrac{2}{x-3}[/tex]

Putting [tex]y=f^{-1}(x)[/tex], we get

[tex]f^{-1}(x)=\dfrac{2}{x-3}[/tex]

Therefore, the inverse function is [tex]f^{-1}(x)=\dfrac{2}{x-3}[/tex].

What is the solution to the equation?


x/7 +8 = 4


Enter your answer in the box.

x=

PLEASE ANSWER NOW

Answers

Answer:-28

Step-by-step explanation:


I need help with this

Answers

Answer:

its d

Step-by-step explanation:

the slope is -20 because for every 30 seconds the altitude gets smaller by 600 feet. 600/30=20 so its going down 20 feet per second.

when the cube root of a positive number “n” is squared, the result is 5, what is the value of “n”?

A) 2.9
B) 3.8
C) 11.2
D) 25.0
E) 42.7

type out explanation for brainliest :)

Answers

(n^1/3)^2 = n^3/2=5
(n^3/2)^2/3=5^2/3
n=5^2/3
n=2.9
A is the correct one

Answer:

A)2.9 is the value of "n".

How far is the portion of her route from D to F? Round to the nearest whole number. Explain.

Answers

Answer:

DF = 1213ft

Step-by-step explanation:

Help my friendddddddddddd

Answers

Hey ur literally owowowo I can’t stop

Answer:

It would be a positive correlation

Step-by-step explanation:

Find the slope for the points (5,7) and (8,4)

Answers

Answer:

-1

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(4-7)/(8-5)

m=-3/3

m=-1

Answer:

m = -1

Step-by-step explanation:

m represents the slope.

The area of a circle is 49π in². What is the circumference, in inches? Express your answer in terms of \piπ.

Answers

area of circle =  π r²

π r²= 49 π

r²= 49             r= √49                  r= 7

circumference of circle = 2 π r

                                       = 2×7 × π

                                       = 14 π

The circumference of a circle is 14π.

What is a circle?

A circle is a two-dimensional figure with a radius and circumference of πr.

The area of a circle is πr².

We have,

Area of a circle = 49π in².

Area of a circle = πr²

Now,

πr² = 49π

r² = 49

r = 7

Now,

Circumference of a circle.

= 2πr

= 2π x 7

= 14π

Thus,

The circumference of a circle is 14π.

Learn more about circle here:

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what is the area of the sidewalk​

Answers

Answer: 105 square feet

Step-by-step explanation:

area is length x width 35 x 3 is 105

Answer: 150 square feet

Simplify this expression.

–6w + (–8) + 1 + (–7w)
A. –w – 7
B. –13w – 7
C. w + 9
D. 13w + 9

Answers

Answer:

-13w-7

Step-by-step explanation:

-6w+(-8)+1+(-7w)

-6w-8+1-7w

-6w-7w-8+1

-13w-8+1

-13w-7

Answer:

B. -13w-7

Step-by-step explanation:

First, let's simplify the problem by grouping the like terms together: (-6w),  (-7w), and (-8), (1).

Second, now that you know the like terms solve them each individually:

(-6w) + (-7w) = -13w

(-8) + 1 = -7

So your answer is -13w minus -7

13 In 2010, Cool Game Corporation made a profit of $84.7 million.
The profit made in 2010 was 2.2 times the profit the company
made in 2009.

Answers

in 2009 the company made thirty-eight million five hundred thousand dollars

Please help the problems are in the picture provided below.

Answers

Answer:

Top Left= 40yd²

Top Right= 441yd²

Bottom Left= 21ft²

Bottom Right= 105ft²

Step-by-step explanation:

Top left- 10×4= 40

Top right- 21×21= 441

Bottom right- 7×3= 21

Bottom left- 15×7=105

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