Solve the following using the quadratic formula:


[tex]x^{2} - 9x - 45 = 0[/tex]

Answer:

The answer is b :D

Step-by-step explanation:25/9= 2.77777778

have a good day

Answer:

16

Step-by-step explanation:

3.5 rounds up to 4

6.7 rounds up to 7

3.2 rounds down to 3

1.7 rounds up to 2

add them up to get 16

when its 5 or above, estimate upwards.

when its 4 and below, estimate downwards.

Answer:

(-4, -3)

Step-by-step explanation:

The graph of both lines will be shown below.

To find the solution, we need to find the point on the graph that both lines intersect on.

As we can see, both lines intersect on the point (-4, -3). Thus, that is the solution.

Best of Luck!

Answer:

X=-4 y=-3

Step-by-step explanation:

Solve by substitution:

Step: Substitute

2x+5 for y in y = −3x−15 :

2x+5+3x=-3x-15+3x ( add 3x to both side)

5x+5=-15

5x+5+-5=-15+-5(add -5 to both sides)

5x=-20

5x/5=-20/5(divide both sides by 5)

X=-4

Step: substitute -4 for x in y=2x+5

Y=2x+5

Y=(2)(-4)+5

y=-3 (simplify both sides of the equation)

I HOPE ITS CORRECT IF IT SNOT IM SORRY!!

Answer:

I think its "Maria selected a multiple that is not the least of the common multiples"

Step-by-step explanation:

I think the real answer would be 30 because it the lowest number that they both share....

Answer: the answer is d, she selected a multiple that is not a least common multiple. The least common multiple is the number both sets of numbers share, which  would be 30.

Answer: x=8 and DE=31

Step-by-step explanation:

Answer:

2000

Step-by-step explanation:

Salim will need to get 2000 clicks in order to get $50 per month or more.

First: 5 cents goes into one dollar 20 times.

Second: You multiply 20 times 50. This is how you get 2000. There is your answer.

Pls Mark Brainliest

Hi madinashakari91 how are you?

I still think you're pretty

Answer:

32 erasers.

Step-by-step explanation:

Leona has 8 erasers. Gabriella has 4 times as many. This means we have to multiply 8 by 4 to get the answer.

8x4 = 32 erasers.

Step-by-step explanation:

P(white)=4/9 is the probability

Answer:C: 2/3 B

Step-by-step explanation:

The answers will be ;

a) The required equation will be c =  [tex]\frac{2}{3}[/tex] b

b) The amount of clay for 8 bowls will be [tex]5\frac{1}{3}[/tex] pounds.

It is given that the double number line shows the amount of clay Jamal uses to make different numbers of identical bowls.

We have to solve the subparts of the question to get the values.

What is algebra ?

Algebra is the branch that deals with various symbols and the arithmetic operations such as addition , division , etc.

As per the question ;

The clay needed per bowl = [tex]\frac{2}{3}[/tex] pounds

a)

The equation for clay (c) to make b number of bowls will be ;

c =  [tex]\frac{2}{3}[/tex] × b

or

c =  [tex]\frac{2}{3}[/tex] b

b)

If there are 8 number of bowls

i.e., b = 8

Then ; amount of clay Jamal needs will be ;

c =  [tex]\frac{2}{3}[/tex] × 8

c = [tex]\frac{16}{3}[/tex] pounds

or

c = [tex]5\frac{1}{3}[/tex] pounds

Thus , the answers will be ;

a) The required equation will be c =  [tex]\frac{2}{3}[/tex] b

b) The amount of clay for 8 bowls will be [tex]5\frac{1}{3}[/tex] pounds.

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Answer:

m= 11/2

Step-by-step explanation:

Answer:

11/2

Step-by-step explanation:

We can use the formula, y2-y1/x2-x1. -4-7/-6+4=-11/-2=11/2

Answer:

I got 1.19446588127

Answer:

x=15

Step-by-step explanation:

Answer:

what is the other lenght? a rectangle has 2 different kinds of sides. Unless you meant a square.

Answer:

Options A and D are correct

Step-by-step explanation:

Here, we want to find the square root of the negative number;

x^2 = -64

x^2 = 64 * -1

x= √64 * √-1

Mathematically we can write the √-1 as i

X = √64 * i

Square root of 64 is plus or minus 8

so x = -8i or 8i

The solutions of an equation are the true values of the equation.

The expression that represents the solution(s) of [tex]\mathbf{8i}[/tex] is [tex]\mathbf{-8i}[/tex]

The equation is given as:

[tex]\mathbf{x^2 = -64}[/tex]

Take square roots of both sides

[tex]\mathbf{x = \pm\sqrt{-64}}[/tex]

Expand

[tex]\mathbf{x = \pm(\sqrt{64} \times \sqrt{-1})}[/tex]

[tex]\mathbf{x = \pm(8 \times \sqrt{-1})}[/tex]

In complex numbers,

[tex]\mathbf{ \sqrt{-1} = i}[/tex]

So, we have:

[tex]\mathbf{x = \pm(8 \times i)}[/tex]

[tex]\mathbf{x = \pm8i}[/tex]

Split

[tex]\mathbf{x = 8i\ or -8i}[/tex]

So, the expression that represents the solution(s) of [tex]\mathbf{8i}[/tex] is [tex]\mathbf{-8i}[/tex]

Read more about expressions at:

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Answer:

4 11/50

Step-by-step explanation:

4.22 = 4 22/100

Now, we simplify!

4 22/100

4 11/50

Hope this helps!

Answer:

Step-by-step explanation:

An army base had provisions for 300 soldiers for  90 days. After 20 days, there should be provisions enough for 300 soldiers for another 70 days

= 21000 soldier-day

50 soldiers left so there are 300-50 = 250 soldiers left

if they consume food at the same rate, the remaining provisions will last

= 21000/250

= 84 days

Answer: -3

Step-by-step explanation: When you graph this that’s what you get

Answer:

-3

Step-by-step explanation:

the y intercept is when x is 0 on the graph. Since you know x has to be zero, you can substitute x for 0 in the equation:

y = -0.5x0 -3

Now you can ignore that first part of the equation because it equates to 0, and so you get:

y= 0 - 3

which equals:

y=-3

Answer:

Step-by-step explanation:

Angle WXY and YXZ form a supplementary angle. This is when two angls add up to be 180°.

We can write an equation and solve for x.

8x - 14 + 2x + 4 = 180

~Combine like terms

10x - 10 = 180

~Add 10 to both sides

10x = 190

~Divide 10 to both sides

x = 19

Find both angles.

8x - 14

8(19) - 14

152 - 14

138

2x + 4

2(19) + 4

38 + 4

42

Best of Luck!

Answer:

y=-1/5x+6

Step-by-step explanation:

y-b=m(x-a)

×5) y-7=-1/5(x--5) (×5

5y-35=-1(x+5)

5y-35=-x-5

5y=-x+30

y=-1/5x+6

Answer:

y=-1/5x+6

Step-by-step explanation:

Answer:

3z+20

Step-by-step explanation:

Not 100% sure on this but thought I might be able to help. To find the perimeter, you simply have to add together each side.

Answer:

15

Step-by-step explanation:

Substitute the values so it becomes 25-20+10. 25-20=5, 5+10=15.

Ansyessss. dont trust me on this

Step-by-step explanation:

good luck

Answer: B is the answer

Step-by-step explanation:

The solution to the equation is B)x=-4.

What is equation ?

    Equations are mathematical expressions that have two algebraic expressions on either side of an equals (=) sign. The expressions on the left and right are shown to be equal to one another, demonstrating this relationship. L.H.S. = R.H.S. (left hand side = right hand side) is a fundamental mathematical formula. For an unknown quantity represented by an unknown variable, equations can be solved to determine its value. It is clear that a statement is not an equation if there is no "equal to" sign in it. The phrase will be regarded as an expression.

Here the given equation is,

[tex]= > \frac{1}{4}x - \frac{1}{8}= \frac{7}{8}+\frac{1}{2}x\\ = > \frac{1}{4}x-\frac{1}{2}x = \frac{7}{8}+\frac{1}{8} \\ = > \frac{1-2}{4}x = \frac{7+1}{8} \\= > \frac{-1}{4}x=\frac{8}{8}\\= > \frac{-1}{4}x=1\\ = > x= -4[/tex]

Hence the solution of the equation is B)x=-4.

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Answer:

The Bakers are now selling their house for $133,860

Step-by-step explanation:

Percentage

The original price for The Bakers' house was $145,500.

Later they decided to mark down the price of the house by 8%.

Since the new price will be 8% less than the original price, we can calculate the markdown as follows:

8 * $145,000 / 100 = $11,640

The new price is calculated as the original price minus the markdown:

New price = $145,500 - $11,640 = $133,860

The Bakers are now selling their house for $133,860

Answer:

-40

Step-by-step explanation:

5(-7-4[0.25])

5(-7-1)

-35-5

-40

Answer:

67.5

Step-by-step explanation:

you turn your fraction into a decimal and to find the decimal you take the number and put it out of 100 such as 1/2 is 50/100 therefore meaning you get .50

67 1/2 in fraction form is 135/2 .

Given,

67 1/2 in mixed fraction .

Now to convert mixed fraction to simple fraction follow the following steps,

Multiply the whole number and denominator of the fraction . After that add numerator part to the result of multiplication . Fraction will be formed by keeping the denominator same,

Thus the resultant will be,

67*2 = 134

134 + 1 = 135

Hence the fraction part is :

135/2.

Know more about fractions,

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Answer:

(6,31)

Step-by-step explanation:

solve the both equation;

3X+13=5X+1

or, 12=2X

or, X=6

substitute the value of x in the equation;

y=5X+1

or, y=5×6+1

or, y=31