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Answer:

a. =11+ 1

b. =4x+ (-7y) + (-5z) +6

c. (-3x) + (-8y) +(-4)+(-8/7z)

Step-by-step explanation:

a. 20 - 9 + 8 -7

=11+ 1  ( this is obtained by solving)

b. 4x - 7y - 5z + 6

=4x+ (-7y) + (-5z) +6

We multiply the negative sign with the positive sign to get a minus so the answer remains the same and the expression is written as an addition sum.

c. -3x - 8y - 4 - 8/7z

-[ 3x+8y+4+8/7z]

or

(-3x) + (-8y) +(-4) +(-8/7z)

The minus sign is taken as common leaving the expression with the plus only.

It can be written in the same manner as above, adding the negative terms so that the expression is written as a sum.

The expressions are a sum after the negative sign is marked with the terms. It shows that the negative terms are being added.

Answer:

no.b

Step-by-step explanation:

it just no bro

Answer:

50

Step-by-step explanation:

Answer:

180 seconds in 3 minutes

Step-by-step explanation:

in 3 minutes there is 180 seconds

Answer:

Proportion of female older Than 60 in country A is not more than the proportion of female older Than 60 in country B.

Step-by-step explanation:

From. The plot given :

We could approximate the proportion of females older than 60 as follows _

COUNTRY A :

60 - 69 = 0.105

70 - 79 = 0.065

80 - 89 = 0.038

90+ = 0.01

Total = About 0.218

COUNTRY B :

60 - 69 = 0.14

70 - 79 = 0.11

80 - 89 = 0.07

90+ = 0.02

Total = About 0.34

From the estimated proportion, the proportion of females on country B is more than the proportion in country A.

Step-by-step explanation:

From Pythagorean theorem

x^2 = (10)^2 - (8)^2 = 36 or x =6

sin theta = opp/hyp = 6/10 = 3/5

cos theta = adj/hyp = 8/10 = 4/5

tan theta = opp/adj = 6/8 = 3/4

cot theta = 1/tan theta = 4/3

sec theta = 1/cos theta = 5/4

csc theta = 1/sin theta = 5/3

The function C represents a parabola that opens downward and intersects the x-axis at (3,0) and (-4,0). Option C is correct.

A function is a statement, rule, or law that establishes the connection between two variables. In mathematics, functions are everywhere and are necessary for constructing physical connections.

The general parabola equation is as follows: y=p (x-h)²+k or x=p(y-k)²+h, with (h,k) indicating the vertex.

The equation of the parabola is;

y=p (x-3)²+0

y=p(y-0)²+ (-4)

On combining both the equations;

f(x) = 8 (x-3) (x+4)

The function C represents a parabola that opens downward and intersects the x-axis at (3,0) and (-4,0).

Hence,option C is correct.

Learn more about the function link.

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Answer:

x = 2v-3y

Step-by-step explanation:

x+3y=2v

x = 2v - 3y    [  rearrange and transpose 3y to the other side making it negative]

I hope im right!

Answer:

Commitment Adherence Percentage = 81.[tex]\overline{81}[/tex]%

Step-by-step explanation:

The time period Amy scheduled herself, t = 8 a.m. - 1 p.m. from Sunday through Wednesday

The period she released her interval = 11 a. m. - 1 p.m.

Commitment Adherence Percentage = Service Minutes/(Posted Minutes + Released Lockdown Minutes) × 100

Posted minutes = 5 hours/day × 60 minutes ×  4 days = 1200 minutes

Serviced minute = 5 hours/day × 60 minutes ×  3 days + 3 hours × 60 minutes/hour = 1,080 minutes

Released minutes = 2 hours × 60 minutes/hour = 120 minutes

Commitment Adherence Percentage = (1,080/(1,200 + 120)) × 100 = 81.[tex]\overline{81}[/tex]%

Answer:

38.16

Step-by-step explanation:

cosine = adjacent leg / hypotenuse

34 / x = cos 27

x = 34 / cos 27 deg

x ≈ 38.16

Answer:

we have

cos 27°=base/hypotenuse

cos27°=34/x

x=34/cos27°= 38.16is your answer

Answer:

4.5 inches

Step-by-step explanation:

Use the formula for the surface area of a sphere, SA = 4[tex]\pi[/tex]r²

Plug in the surface area and solve for r, the radius:

SA = 4[tex]\pi[/tex]r²

254.5 = [tex]\pi[/tex]r²

20.25 = r²

4.5 = r

So, the radius is approximately 4.5 inches

Answer: $32.25

Step-by-step explanation:

Assuming this is compound interest, the value of the investment after a period of time can be calculated with the future value formula:

Value = Investment * ( 1 + rate) ^ no. of periods

Value ₄₀ = 2,000 * ( 1 + 0.04%)⁴⁰

Value ₄₀ = $2,032.25

Interest earned = Value at 40 years - Initial investment

= 2,032.25 - 2,000

= $32.25

Answer:

692 ft^2

Step-by-step explanation:

Area of a circle = (pi)(radius)^2

Here,

Area of the circle = (3.14)(21 ft)^2 = 1385 ft^2

Area of half this circle = area of the semicircle = 1385 ft^2  /  2, or

Area of semicircle = 692 ft^2

Answer:

I cant figure it out, sorry :(

Answer:

x=10 and x=-6

Step-by-step explanation:

f(x)=(x-2)²-64 (Given)

0=(x-2)²-64 (Set equation equal to 0)

64=(x-2)² (Add 64 to both sides)

±8=x-2 (Take the square root of both sides)

Because there are two possible roots, make 2 equations to find both:

8=x-2 and -8=x-2

10=x and -6=x

Answer:

gsyshehejejeijsjejekwkwkwkwkwkwk

Answer:

this dude is a loser

Step-by-step explanation:

this person is a fat loser

Answer: 35 trading cards

Step-by-step explanation:

Assume the trading cards collected by Trey is x.

That means that the number of trading cards collected by Abigail is 7x.

Relevant expression is:

7x + x = 40

8x = 40

x = 40/8

x = 5 trading cards

This means that Trey collected 5 trading cards

Abigail collected 7 times that figure so Abigail collected:

= 7 * 5

= 35 trading cards

The value of x will be 60.33. Then the tan 48° will be 67 / 60.33.

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The right-angle triangle has angles of 48°, 42°, and 90°.

Then the value of x will be

tan 42° = x / 67

         x = 60.33

Then the tan 48° is given as

tan 48° = 67 / 60.33

More about the trigonometry link is given below.

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Answer:

[tex]25 * 68 = 1700[/tex]

Step-by-step explanation:

Given

[tex]25 * 68[/tex]

Required

Fill the array using doubling and halving

Question is incomplete, as the array is not given.

However, the solution is as follows:

[tex]25 * 68[/tex]

Double 25 and half 68

[tex]25 * 68 = 50 * 34[/tex]

Double 50 and half 34

[tex]25 * 68 = 100 * 17[/tex]

The above is now easy to solve

[tex]25 * 68 = 1700[/tex]

Answer:

Step-by-step explanation:

I'm thinking cu

Answer:

7/4 = 35/20

Step-by-step explanation:

35 = 7 x 5 ; 20 = 4 x 5

Answer:

log₃(243) = x

Step-by-step explanation:

3^x = 243

Rule: a^x = b -> logₐ(b) = x

log₃(243) = x

Answer:

x = 23

Step-by-step explanation:

Remember, angles in a triangle add up to equal 180

That being said we can create an equation to solve for x

180 = 110 + 35 + x + 12

now we solve for x

step 1: combine like terms

110 + 35 + 12 = 157

now we have 180 = 157 + x

step 2 subtract 157 from each side

180 - 157 = 23

157  - 157 cancels out

we're left with x = 23

Answer: 12

Step-by-step explanation:

Answer:

35.8

Step-by-step explanation:

Triangle adds up to 360 degrees

5y+4y+3+y-1=360

10y+2=360

     -2   -2

10y=358

divided both sides by 1o

y=35.8

Answer: 11/24

Convert 3/8 to 9/24

Convert 1/12 to 2/24

Add them together to get 11/24

If I did a poor job explaining I can help more in the comments.

Answer:

Hi, there the answer is 11/24

Step-by-step explanation:

9/24+2/24  

9+2/24

11/24

If you didn't understand here's something you can understand I felt like I didn't understand what I wrote on the top

Find the Least Common Multiple

[tex]\frac{3}{8} +\frac{1}{12}[/tex]

[tex]\frac{9}{24} +\frac{2}{24}[/tex]

[tex]\frac{9+2}{24}[/tex]

[tex]\frac{11}{24}[/tex]

Answer:

yes.

Step-by-step explanation:

Answer:

2. more baking powder b/c 7/8 > 1/4

3. giraffe is herbivore b/c it sleeps less, ---> 1/6 < 3/4 ----> b/c 4/24 < 18/24

4. Question: Who helps for more time at the fair and who helps for more time?

Josh helps for less time than Sarai, as 3/8 < 8/12

Step-by-step explanation:

hope this helps