I need help I need all answers for #8 please

Answer:

-22

Step-by-step explanation:

x-3y

(-4)-3(-6)

(-4)-(-18)

(-22)

Answer:

0

Step-by-step explanation:

[tex]-7+(\frac{63}{9})=-7+7=0[/tex]

Answer:

Quadrant 1

Step-by-step explanation:

Answer:

Im confused?

Step-by-step explanation:

The number of pounds of apples is 16 and the number of pounds of raspberries is 48.

Given that, the cost of a pound of apples = $2.25 and the cost of a pound of raspberries = $1.50.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Let the number of pounds of apples be x, then the number of pounds of raspberries(y) be y=x+32.

Now, the total cost of apples = The number of pounds of apples × The cost of a pound of apples

=x × 2.25

= 2.25x

The total cost of raspberries = The number of pounds of raspberries × The cost of a pound of raspberries

=(x+32) × 1.50

=1.50x+48

So, the total cost = The total cost of apples + The total cost of raspberries

⇒108 = 2.25x+1.50x+48

⇒3.75x=60

⇒x=16

So, y=x+32=48

The graph is plotted below for y=x+32=48

Therefore, the number of pounds of apples is 16 and the number of pounds of raspberries is 48.

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Answer:

b

Step-by-step explanation:

Answer:

reflection!!

Step-by-step explanation:

Answer:

-25 < -19 < -12 < 8 < 12 < 18 < 23

Step-by-step explanation:

Sorry if im wrong

Answer:

18

Step-by-step explanation:

Answer:

multiply 6:8 by 2

12:16

Answer:

Step-by-step explanation:

x² -14x+50= 0

this equation has 2 solutions because is a quadratic

the solurions are imaginary roots because the discriminant is less then 0

b²-4ac = (-14)²-4*1*50 = 194-200= -6

to find the actual roots use the quadratic formula

Answer: they are all similar

Step-by-step explanation: they all are the same shape no matter how long or tall they are

then A If it’s a horizontal line passing through

Answer:

26

Step-by-step explanation:

If there are a total of 50 questions worth 130 points on Chenille’s history exam. There are 24 2-point questions are on Chenille’s test.

An equation is a statement that two expressions, which include variables and/or numbers, are equal. In essence, equations are questions, and efforts to systematically find solutions to these questions have been the driving forces behind the creation of mathematics.

It is given that, there are a total of 50 questions worth 130 points on Chenille’s history exam. Some of the questions are worth 5 points each, and the other questions are worth 2 points each.

We have to find the 2-point questions on Chenille’s test,

Suppose the number of questions worth 5 points and 2 points will be x and y respectively.

The obtained equation according to the given conditions is,

x+y=50

5x+2y=130

Put the value of y in equation 1 as

5x+250=130

5x=250-130

5x=120

x=24

The value of y will be 26.

Thus, if there are a total of 50 questions worth 130 points on Chenille’s history exam. There are 24 2-point questions are on Chenille’s test.

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Answer:

Dimensions 2, 6, 18

Step-by-step explanation:

Given:

Volume of the cuboid = 216 cm³

Surface of the cuboid = 312 cm³

Find:

Dimensions of the cuboid

Computation:

Assume sides ; a/d , a , ad

So,

Volume of the cuboid = 216 cm³ =  side1 x side2 x side3

216  = a/d x a x ad

a = 6

Surface of the cuboid = 312 cm³

312 = 2[lb+bh+hl]

312 = 2[a²/d + a²d + a]

312 = 2[36/d + 36d + 36]

d = 3

So,

Dimensions 2, 6, 18

Answer:

2 2/5

Step-by-step explanation:

3/4 divided by 5/16 = 3/4 times 16/5, which equals 48/20.

4 goes into each.

thus, giving you 12/5.

we write this as a mixed number, which gives us 2 2/5

Answer:

40:60:80

Step-by-step explanation:

2x+3x+4x=180 (sum of ang. In tri. Is 180)

X=20

2x is 40

3x is 60

4x is 80

40 plus 60 plus 80 is 180.

Answer:

Than answer is (7 x 2) + 3

Answer: free robux

Step-by-step explanatiofre

Answer:

-4/9 or -0.4

Step-by-step explanation:

I don't actually know, im not smart, I'm just answering for the points

Answer:

(8, 8)

Step-by-step explanation:

Since the 3 replaces the x in (x, y), that means you would add the 5 to the three, making 8. Same thing for the 7 and the y. 7 plus 1 is 8.

Answer:

Step-by-step explanation:

Here we need to write the equations that passes through the point (4 , 3) and is parallel to the given line and perpendicular to it. So lets get started,

a)

First we calculate the slope of the given line by using any two points on the given line by the help of the formula:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

we take the points (1 , 6) and (2 , 2) i chose these two you can choose any other two doesn't matter so now we calculate the slope,

[tex]m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{2-6}{2-1}\\\\m=\frac{-4}{1}\\\\m=-4[/tex]

now since our slope is -4 and the line is parallel to the given line so the line that we need in part a would also have the same slope by the law parallel lines have same slope/gradient.

[tex]m_1=m_2[/tex]

so the slope/gradient of our new line that we need which passes through the point (4,3) is -4

Now using the point slope form formula:

[tex]y-y_1=m(x-x_1)[/tex]

we have our point (4,3) which corresponds to [tex](x_1,y_1)[/tex] and m which corresponds to -4 , so now

[tex]y-y_1=m(x-x_1)\\y-3=-4(x-4)\\y-3=-4x+16\\y=-4x+19[/tex]

sow our new line in part a is

[tex]y=-4x+19[/tex]

b)

In this part we need a line that is perpendicular to the given line which means we use the formula to calculate the slope of the perpendicular line which is:

[tex]m_1m_2=-1[/tex]

where [tex]m_1=-4[/tex] the slope of our given line so the slope of the perpendicular line is,

[tex]m_1m_2=-1\\-4m_2=-1\\\\m_2=\frac{1}{4}[/tex]

so using the point (4,3) and the new slope 1/4 we find the equation of the perpendicular line again by using the point-slope form formula:

[tex]y-y_1=m(x-x_1)\\y-3=\frac{1}{4}(x-4)\\\\4y-12=x-4 \\4y=x+8\\\\y=\frac{x+8}{4}\\\\y=\frac{x}{4}+2[/tex]

I have attached of the graphs as well you can check it out for better understanding.

Answer:

[tex]A=0.95m^2[/tex]

Step-by-step explanation:

From the question we are told that

Length of circular segment[tex]l =1.0m[/tex]

Radius [tex]r =2.0m[/tex]

Generally considering points A's angle

        [tex]\angle A = \frac{1}{2} radian[/tex]

Mathematically converting [tex]\angle[/tex] to degree

        [tex]\angle A= 1/2*100/\pi[/tex]

        [tex]\angle A=20.6 \%[/tex]

Mathematically solving for the triangles Area

         [tex]A=\frac{1}{2} * AB* AC*sinA[/tex]

         [tex]A=\frac{1}{2} * 2* 2*sin(28.64)[/tex]

         [tex]A=0.95m^2[/tex]

Answer:

6 is -10

Step-by-step explanation:

Answer:

61.922 feet

Step-by-step explanation:

For this problem, we simply want to set up a trigonometric function that computes the height of the tree, and we want to add the height of Tamara.

We are given a distance from the tree of 30 feet with an angle from her eye-level to the top at 62 degrees.  So we can say the following:

y = tan(Θ) * x

Where Θ = 62 degrees, x = 30 feet, and y is the height of the tree from Tamara's eye level.

y = tan(Θ) * x

y = tan(62) * 30

y = 56.422

So we also need to include the height of Tamara to get the total height of the tree from the ground to the top.

56.422 ft + 5.5 ft = 61.922 ft

Hence, the total height of the tree is 61.922 feet.

The height of the tree is 71.32 feet.

Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.

We set up a trigonometric function to get height of tree.

Distance ,

x = 35 feet away from tree base

Angle = 62⁰ at eye level

Then we get;

Y = tan(angle) x

Y = tan(62⁰) x 35

Y = 1.881 x 35

Y = 65.82 feet

We add Tamara's height to the total height of the tree that forms an equation as;

= 65.82feet + 5.5 feet

= 71.32 feet is the height of the tree

The height of the tree is 71.32 feet.

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Answer:

5/9

Step-by-step explanation:

(5/6)/1 1/2

5/9

Merry Christmas

Answer:

We can make 48 cookies.

Step-by-step explanation:

60 percent of 120 = 72

120 - 72 = 48

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Answer:

5 MB : 16 B

Step-by-step explanation:

First, find the GCF of 770 and 350. ( 70 )

Next, divide both numbers by 70

770 / 70  = 11 Kidney beans

350 / 70 = 5 Mung beans

It says ratio of mung beans to all beans.

11 KB + 5 MB = 16 B

5 Mung beans to 16 Beans

:)

2.5 inches steel wire

We can use an equation to find the answer. 750/300 = 2.5

Answer:

2.5 inches of steel wire are needed to make one spring.

Step-by-step explanation:

In order to answer this, we can set up a proportion (setting two fractions equal to each other) to solve for how many inches of steel wire are needed to make one spring.

We are given a ratio: 750 inches of steel wire are required to make 300 springs. Therefore, this is represented as:

[tex]\bullet \ \ \ \text{750 inches of steel wire : 300 springs}[/tex]

This can be rewritten in fraction form:

[tex]\displaystyle \bullet \ \ \ \frac{\text{750 inches of steel wire}}{\text{300 springs}}[/tex]

Therefore, we have our first proportion.

We want to make one spring, so we need to find how much steel is required to make one spring. Therefore, for our second fraction, the inches of steel wire is unknown. We can define this as x.

[tex]\bullet \ \ \ \text{x inches of steel wire}[/tex]

Finally, our ratio can be written in the same manner as the previous ratio:

[tex]\bullet \ \ \ \text{x inches of steel wire : 1 spring}[/tex]

This can be rewritten in fraction form:

[tex]\displaystyle \bullet \ \ \ \frac{\text{x inches of steel wire}}{\text{1 spring}}[/tex]

Now, we need to set up our proportion. We do this by setting our two ratios equal to each other.

[tex]\displaystyle \bullet \ \ \ \frac{\text{750 inches of steel wire}}{\text{300 springs}} = \frac{\text{x inches of steel wire}}{\text{1 spring}}[/tex]

To solve a proportion, we need to cross multiply. We can flip our fractions and solve for the reciprocal since there is not really a way to represent cross-multiplication.

[tex]\displaystyle \bullet \ \ \ \frac{\text{750 inches of steel wire}}{\text{300 springs}} = \frac{\text{1 spring}}{\text{x inches of steel}}[/tex]

First, we can drop our labels/units.

[tex]\displaystyle \bullet \ \ \ \frac{750}{300} = \frac{1}{\text{x}}[/tex]

Then, we can multiply across.

[tex]\displaystyle \bullet \ \ \ 750 = 300x[/tex]

Finally, we can solve for x.

[tex]\displaystyle 750 = 300x\\\\\frac{750}{300}=\frac{300x}{300}\\\\2.5 = x\\\\x = 2.5[/tex]

Therefore, to make one spring, exactly 2.5 inches of steel wire are needed.

Answer: I believe Betty

Step-by-step explanation:

Betty because bennet says 300 divided by seven is 50 but is 42

Answer:

betty

Step-by-step explanation: