I picked the first one, was I correct?

Answer:

84

Step-by-step explanation:

20 x 4.2=84 also Ms.Yost is a savage

Answer:

the answer is x equals 22 and y equals 8

Step-by-step explanation:

first equation is x+y=30

Second equation is x-y/2=7 that simplify's to x-y=14

then you add then so they will cancel out and you are left with 2x=44 so divide two by both sides which gives x=22

then you subsitute the 22 in the first equation. It will be 22+y=30 then you subtract 22 from the 30 that gives you y=8

so the two numbers are 22 and 8

Hope this helps!!!!

The numbers satisfying the given conditions are 22 and 8.

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.

The equation of a straight line can be also written as -

Ax + By + C = 0

By = - Ax - C

y = (- A/B)x - (C/A)

We have the following problem -

Two numbers have a sum of 30. Half of their difference is 7.

We can write the equations as -

x + y = 30

1/2(x - y) = 7

Rearranging, we get -

y = - x + 30

y = x - 14

Plot the graph, the point of intersection is the solution. The number will be 22 and 8.

y = - x + 30

y = x - 14

Equating both, we get -

- x + 30 = x - 14

30 + 14 = 2x

2x = 44

x = 22

and

y = 22 - 14

y = 8

Therefore, the numbers satisfying the given conditions are 22 and 8.

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Answer:

View the image below

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

To better see what the slope is (the coefficient of x), write it in slope-intercept form, y=mx+b. The slope-intercept form of [tex]y -3 = 5(x-2)[/tex] is [tex]y=5x-7[/tex].  The slope is the coefficient of x, which is 5.

Hope this helps! :)

Answer:

x=6/7

Step-by-step explanation:

7x÷2+5=8

divide by 2 on both sides:

7x/2+5=8(it's a fraction)

subtract 5 on both sides

7x÷2=3

multiply 2 on both sides

7x=6

divide by seven on both sides

x=6/7

hope this was helpful and the instructions were clear enough!

Answer:

the angle is 176

Step-by-step explanation:

Answer:

350 millimeters

Step-by-step explanation:

3.5 millimeters x 100 = 350 millimeters

Answer:

100 each bird in store and more than 100 depends price

Answer:

ysh what do you need?

Step-by-step explanation:

Answer:

Step-by-step explanation: Tip 1) Always Start from the More Complex Side.

Example Q1) Prove the identity tan⁴x = sec²x (tan²x-1)+1.

Tip 2) Express everything into Sine and Cosine.

Tip 3) Combine Terms into a Single Fraction.

Tip 4) Use Pythagorean Identities to transform between sin²x and cos²x.

Tip 5) Know when to Apply Double Angle Formula (DAF)

Answer:

18+2(4−1)

=18+(2)(3)

=18+6

=24

The value of  sin (345)=  (-sqrt6 + sqrt2)/4=  -0.2588

Trigonometry, the area of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).

Given:

sin (345)

Now, using Trigonometric identity

sin(a+ b)=sin a x cos b+ sin b x cos a

Now, expand 345= 300+ 45

sin(300 + 45)=sin 300 x cos 45+ sin 45 x cos 300

sin(300 + 45)= -√3/2 x √2/2 + √2/2 x  1/2

                     = -√6/4 + √2/4

                    =  -0.2588

Hence, sin (345)=  -0.2588

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Answer:

Step-by-step explanation:

Given the equation  of motion;

S = ut + 1/2 at² where;

u is the initial velocity,

a is the acceleration, and;

t is the time.

We are to express a in terms of u, t and S

Making a the subject of the formula;

S = ut + 1/2 at²

S-ut = 1/2at²

2(S-ut) = at²

a = 2(S-ut)/t²

Hence the acceleration a in terms of other variables is expressed as a = 2(S-ut)/t²

Answer:

4.5

Step-by-step explanation:

Answer:

The slope of the descent is 0.12 rounded to the nearest hundredth

Step-by-step explanation:

The given parameters are;

The vertical distance of descent of Bobba Dean = 1600 feet

The horizontal distance Bobba Dean has moved from the mountain high point = 2.5 miles

1 mile = 5,280 feet

∴ 2.5 miles = 2.5 × 5,280 feet = 13,200 feet

The slope of the descent = (The change in vertical elevation of Bobba Dean)/(The change in horizontal position from the high point of the mountain, by Bobba dean)

∴ The slope of the descent = (1600 feet descent)/(13,200 feet) = 4/33

The slope of the descent = 4/33 = 0.12 rounded to the nearest hundredth

Answer:

y=-3

hiiiiiiiiiiiiii

Answer:

a

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

first time they spent 11

2nd time was 1 dollar less

since 1 burrito is 2 dollars 3 is 6

and the 4 tacost were 4 dollars

I might be wrong

Answer:

3

Step-by-step explanation:

2x + 4 = 10

2x = 6

x = 6 ÷ 2

x = 3

Answer: y= 25+2.5x

Step-by-step explanation:

Let a = base pay , b = additional amount per newspaper.

Given: Last week, Pedro delivered 5 newspapers and earned $37.50.

i.e. 37.50=a+5b      (i)

This week, he delivered 20 newspapers and earned $75.

i.e. 75=a+20b         (ii)

Eliminate (i) from (ii)

37.50=15b

[tex]\Rightarrow\ b=\dfrac{37.50}{15}\\\\\Rightarrow\ b=2.5[/tex], i.e. additional amount per newspaper= $2.5

Put b= 2.5 in (i)

[tex]37.50=a+5(2.5)\\\\\Rightarrow\ 37.50=a+12.5\\\\\Rightarrow\ a=37.50-12.5\\\\\Rightarrow\ a=25[/tex], i.e. base pay = $20

Let x= Number of newspapers Pedro delivers.

y=  Earnings he receives in dollars.

y= 25+2.5x will be the required function.

Answer:

0.01

Step-by-step explanation:

Replace the numbers with the variables

0.5*0.2*0.1

0.01

The evaluation of the given LWH is 0.01.

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given the Parameters as;

L = 0.5, W = 0.2, and H= 0.1

Now to find the volume we are asked to calculate the LWH

Now Replace the numbers with the variables

LWH  = 0.5 x 0.2 x 0.1

LWH  = 0.01

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Step-by-step explanation:

Let:-

[tex]p = {q}^{r}[/tex]be eqn.1

[tex]q = {r}^{p} [/tex]be eqn.2

[tex]r = {p}^{q} [/tex]be eqn.3

Susbstituting the value of p from eqn.1 to eqn.3 ,

[tex]r = {( {q}^{r} )}^{q} \: = {q}^{qr} [/tex]

Substituting the value of q from eqn.2 to eqn.3 ,

[tex]r = ( { {r}^{p} )}^{qr} = ( {r})^{pqr} [/tex]

[tex] = > {r}^{1} = {r}^{pqr} [/tex]

As bases are same in both the sides of this eqn.

[tex] = > pqr = 1[/tex]

We can easily prove the statement that if [tex]p=q^{r}[/tex], [tex]q = r^{p}[/tex] and [tex]r=p^{q}[/tex] , then pqr=1.

We know that a number's exponent indicates how many times it should be multiplied.

Given that

[tex]p=q^{r}[/tex]

[tex]q = r^{p}[/tex]

Now, [tex]r=p^{q}[/tex]

i.e. [tex]r=(q^{r})^{q}[/tex]

i.e. [tex]r=(q^{qr})[/tex]

i.e. [tex]r=(r^{p})^{rq}[/tex]

i.e. [tex]r=(r^{pqr})[/tex]

i.e. [tex]\frac{r}{r^{pqr}} =1[/tex]

i.e. [tex]r^{1-pqr} =r^{0}[/tex] [Since [tex]a^{0} = 1[/tex], a is any number]

i.e. 1 - pqr = 0

i.e. pqr = 1

We proved our statement that if [tex]p=q^{r}[/tex], [tex]q = r^{p}[/tex] and [tex]r=p^{q}[/tex], then pqr=1.

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Answer:

7 points

Step-by-step explanation:

started out w/ 5 points, then loses 8

5 - 8 = -3

gains 10 points

-3 + 10 = 7

Answer:

19

Step-by-step explanation:

Answer: my estimate is 170.1

Step-by-step explanation: tell me if i'm right

Answer:

3:2

Step-by-step explanation:

For every 3 girls : there is 2 boys, so it's 3:2

3:6 in simplest form=1:2

Answer:

y-5=1/2(x-(-4))

Step-by-step explanation:

equation of a st. line having slope m= ½ and passing through the point (x1,y1)