I need the answers... Help please

Answer:

x = - 2, x = - 1

Step-by-step explanation:

Given

y = (x + 2)(- x - 1)

To solve for x let y = 0, that is

(x + 2)(- x - 1) = 0

Equate each factor to zero and solve for x

x + 2 = 0 ⇒ x = - 2

- x - 1 = 0 ⇒ - x = 1 ⇒ x = - 1

Step-by-step explanation:

y=(x+2) (-x-1)

(45) - (+14)

y= (x+2) (-x-1)

y=-2

Answer:

Hey there!

12x+4(x-1)=60

12x+4x-4=60

16x-4=60

16x=64

x=4

Let me know if this helps :)

Answer:

x=4

Step-by-step explanation:

Answer:

1:A(-6,-1) B(-14,0) C(-11,4)

2:D(6,-3) E(2,-3) F(3, -4.5) G(5, -4.5)

3:H(-4,1) I(-4, 6) J(0,6) K(0,1)

Step-by-step explanation:

Before we begin, lets define the transformations:

(x, y)

T(a, b) = (x+a, y +b)

Rxaxis = (x, -y)

Ryaxis = (-x, y)

r(180, 0) = (-x, -y)

D.5(1/2x, 1/2y)

R(-90, O) = (-y, x)

1. T. A(6,-1) B(14,0) C(11,4)

   Rx. A(6, 1) B(14,0) C(11,-4)

   r180 A(-6,-1) B(-14,0) C(-11,4)

2. Rx D(-12,-6) E(-4,-6) F(-6, -9) G(-10, -9)

   Ry D(12,-6) E(4,-6) F(6, -9) G(10, -9)

   D.5 D(6,-3) E(2,-3) F(3, -4.5) G(5, -4.5)

3. Rx=1 H(-1,2) I(4, 2) J(4,-2) K(-1,-2)

   T H(1,4) I(6, 4) J(6,0) K(1,0)

   r-90 H(-4,1) I(-4, 6) J(0,6) K(0,1)

Answer:

B

Step-by-step explanation:

just did it

Answer:

[tex]\huge\boxed{Option \ B: 5\sqrt[3]{10} + 4\sqrt[3]{10} }[/tex]

Step-by-step explanation:

[tex]\sf 9\sqrt[3]{10} \\We \ can \ split \ 9 \ into\ 5 \ and \ 4\\(5 + 4)\sqrt[3]{10} \\Applying distributive property\\5\sqrt[3]{10} + 4\sqrt[3]{10}[/tex]

Answer:

  [tex]\dfrac{3}{4}\times\dfrac{1}{4}[/tex]

Step-by-step explanation:

3 of the 4 rows of the figure are shaded, so that shading represents the fraction 3/4.

1 of the 4 columns of the figure is shaded, so that shading represents the fraction 1/4.

Where the shaded rows and column overlap, the product is represented. That product is ...

  3/4 × 1/4

Answer:

3/4 x 1/4

Step-by-step explanation:

it was right

72    90    126............ (2)

36    45     63..............(3)

12     15      21...............(3)

4       5       7................can't be divided more.

So, 2 x 3 x 3 = 18 is the biggest common factor of 72, 90, and 126.

Answer:

6

Step-by-step explanation:

72={1,2,3,4,6,8,9,12,18,24,36,72}

90={1,2,3,5,6,9,10,15,18,30,45,90}

126={1,2,3,4,6,7,9,1418,21,42,63,126}

Common factors of 72,90 and 126

1,2,3,4,6

6 is greater than 1, 2, 3 and 4.

Hope this helps ;) ❤❤❤

Answer:

30cm²

Step-by-step explanation:

Since there are two 10 centimeter sides, this can be shown as 10cm×2=20cm. Since there are two 5 centimeter sides, this can be shown as 5cm×2=10cm. 20cm+10cm=30cm².

Answer:

(2x+9)  ^3

Step-by-step explanation:

 (((8 • (x3)) +  729) +  (22•33x2)) +  486x

 ((23x3 +  729) +  (22•33x2)) +  486x

Factoring:  8x3+108x2+486x+729  

 8x3+108x2+486x+729  is a perfect cube which means it is the cube of another polynomial  

 In our case, the cubic root of  8x3+108x2+486x+729  is  2x+9  

 Factorization is  (2x+9)3

Hope this helped

Answer:

x=-1 y=-6

Step-by-step explanation:

i hope that helped

============================================

Explanation:

"Bisect" means to cut in half

M is the midpoint as it cuts segment ST in half

SM and MT are the same length

SM = MT

2x+3 = 4x-7

2x-4x = -7-3

-2x = -10

x = -10/(-2)

x = 5

----------

If x = 5, then

SM = 2x+3 = 2(5)+3 = 10+3 = 13

MT = 4x-7 = 4(5)-7 = 20-7 = 13

Both SM and MT are the same length (13 units). This confirms the answer.

Answer:

$277,419

Step-by-step explanation:

Relevant Data provided as per the question is

Net amount = 50,000

Closing cost = 8,000

Loan amount = 200,000

Commission percentage = 7%

According to the given situation, the calculation of the minimum contract price is shown below:-

[tex]Minimum\ contract\ price = \frac{(Net\ amount\ +\ Closing\ cost\ +\ Loan\ amount) }{Remaining\ percentage}[/tex]

[tex]= \frac{(50,000 + 8,000 + 200,000)}{(100\% - 7\%)}[/tex]

[tex]= \frac{258,000}{93\%}[/tex]

= $277,419

Therefore for calculating the minimum contract price we simply applied the above formula.

Answer:

Step-by-step explanation:

2 3/7 - 1 1/4

2 3/7 - 1 1/4First turn the two mixed numbers into improper fraction:

2 3/7 - 1 1/4First turn the two mixed numbers into improper fraction:17/7 - 5/4

2 3/7 - 1 1/4First turn the two mixed numbers into improper fraction:17/7 - 5/4Next find the Lowest Common Denominator:

L.C.D = 28

L.C.D = 2821 - 12/28

L.C.D = 2821 - 12/28= 9/28

It won't be a mixed number because the denominator is bigger than the numerator.

Answer:

500 and 5,000

Step-by-step explanation:

The value of the first 5 is five hundred (500)

The value of the second is five thousand (5,000)

The place value of 5 in the number 25,578 is 500 and 5,000.

The value of each digit in a number is known as the place value. The 5 in 5,006 signifies 5 thousand, or 5,000, while the 5 in 350 represents 5 tens, or 50. Children must learn that while a digit can have the same value, its value changes depending on where it appears in the number.

A number is a numerical unit of measurement and labeling in mathematics. The first examples are the numbers 1, 2, 3, and 4.

The place value of 5 in the number 25,578 will be calculated as below:-

The value of the first 5 is five hundred 500.

The value of the second is five thousand 5,000.

Therefore, the place value of 5 in the number 25,578 is 500 and 5,000.

To know more about the place value of the numbers follow

https://brainly.com/question/2041524

#SPJ2

Step-by-step explanation:

Using Point Slope formula :

[tex](y - y_1) = \frac{(y_2 - y_1)}{(x_2 - x_1)} (x - x_1)[/tex]

[tex](y - 4) = 5(x - 3)[/tex]

[tex]y = 5x - 11[/tex]

Answer:

The point slope formula is : y-y₁ =m(x-x₁), so first u need to find the value of slope.

Step-by-step explanation:

finding the value of slope:

slope(m)= y₂-y₁ ÷ x₂-x₁

              = -1-4 ÷ 2-3

               = 5

now finding equation;

y-y₁=m(x-x₁)

y-4 = 5(x-3)

11=5x - y

0= 5x - y -11

therefore equation of line in point slope is : 5x-y-11=0

Answer:

5. When the dome is 50 feet high, the distance from the center is 5 feet

6. The equation that model the price y of an x-mile long ride is given as follows;

y = 0.1×x + $3.00

7. The discriminant is < 0; The equation has no real root

8. f(3) = 68

9. The equation representing the translation of the line f(x) = 7·x + 3 down 4 units is f(x) = 7·x + 7

Step-by-step explanation:

5. The given equation for the shape of the dome is presented as follows;

h = -2·d² + 100

Where;

h = The height of the dome (in feet)

d = The distance from the center

Therefore, we have;

When h = 50, d is found as follows;

h = -2·d² + 100

50 = -2·d² + 100

50 - 100 = -2·d²

-50 = -2·d²

∴ 2·d² = 50

d² = 50/2 = 25

d = √25 = 5 feet

Therefore when the dome is 50 feet high, the distance from the center is 5 feet

6. The given rate the cab charges per mile, x = $0.10

The rate the cab charges as flat fee = $3.00

Therefore, the price, y a person traveling by cab for x miles is given by the straight lie equation as y = m·x + c,

Where;

m = the slope or rate which in this case = $0.1/hour

c = A constant term which in this case = $3.00

Therefore

y = 0.1×x + $3.00

The equation that model the price y of an x-mile long ride is y = 0.1×x + $3.00

7. The discriminant, b² - 4·a·c  of the quadratic equation is (-4)² - 4×3×6 = -56

which is < 0, the equation has no real root

8. Given f(x) = 7·x² + 5

f(3) = 7 × (3)² + 5 = 68

f(3) = 68

9. The equation representing the translation of the line f(x) = 7·x + 3 down 4 units is given as follows;

Down 4 units is equivalent to subtracting 4 from the y-coordinate value, therefore, we have;

f(x) - 4= 7·x + 3

f(x) = 7·x + 3 + 4

f(x) = 7·x + 7

The equation representing the translation of the line f(x) = 7·x + 3 down 4 units is f(x) = 7·x + 7

Answer:

Step-by-step explanation:

Given the function f(x) = 12, the function is only a constant with no degree. For a function to have roots, it must have at least degree of 1. Let us write the function f(x) = 12 in terms of x

f(x) = 12x⁰

From the function above it can be seen that the introduction of x⁰ can not in any way affect the function of x because x⁰ will return 1.

From the function, it can be seen that the highest power of the variable x is zero. This means that the function has no roots.

Hence, there are no real zeros of the function.

Answer:

___ x 10 = ____^2

Step-by-step explanation:

Answer:

(-6,0)

Step-by-step explanation:

Whether we rotate a point 180° clockwise or counterclockwise, we'll always end up at the same point.

When we rotate a point by 180°, assuming the original point is [tex](x,y)[/tex], the new coordinate becomes [tex](-x,-y)[/tex].

So:

[tex](-6,-0)\\\\(-6,0)[/tex]

Hope this helped!

Answer:-4,4

Step-by-step explanation:

Because, -4 plus -1 is -5 and 4+1 is 5, hope this helps

>~<

Step-by-step explanation:

(-6,1)

Answer: a. ​is always an upper tail test.

Step-by-step explanation:

The chi-square goodness-of-fit test is a test to check whether the sample comes from the population with the expected distribution or not.

If the observed frequency is close to the expected frequency, then the square of the deviations will be small. The square of the deviation is divided by the expected frequency to get the weighted frequencies.

If the sum of these weighted squared deviations is large is then it creates a doubt for the distribution claimed other wise not. Therefore, the chi-square goodness-of-fit test is always a right tail test.

Hence correct option is "a. ​is always an upper tail test. "

Answer:

Decreased  

Step-by-step explanation:

Answer: 5

Step-by-step explanation:

 8+(-3)

=8-3 ⇔ you don't need to change signs when it is positive(+) outside the parenthesis

=5 ⇔ subtraction

#CarryOnLearning

Answer:

No

Step-by-step explanation:

Substitute (6, 10 ) into the left side of the inequality and compare value with right side.

8(6) + 2(10) = 48 + 20 = 68 > 2

Thus (6, 10 ) is not a solution of the inequality

Answer:

0,4

Step-by-step explanation:

When yo go  3 to the left for x you get back to 0 and when you go up 3 for 1 you go up to 4.

Answer:

(0,4)

Step-by-step explanation:

its right

I know Iscoscles and acute only

Answer:

True choices are 1, 2, 5

Step-by-step explanation:

As per diagram, the circles are equal.

Since the distance AB is the radius of both circles:

So the answer choices:

1. AC = BC

2. AC = BD

3. CD = AB

4. ABCD is a square

5. ABD is an equilateral triangle

6. CD = AB + AB

Answer:

43

Step-by-step explanation:

Sum means total

n+7=50

n=50-7

n=43

Answer:

Step-by-step explanation:

The distance between two points can be found by using the formula

[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-4,-1) and (-3,-1)

The distance between them is

[tex]d = \sqrt{ ({ - 4 + 3})^{2} + ({ - 1 + 1})^{2} } \\ = \sqrt{ ({ - 1})^{2} } \\ = \sqrt{1} [/tex]

We have the final answer as

1 unit

Hope this helps you

Answer:

128 markers.

Step-by-step explanation:

7 x 8 =  56

12 x 6 = 72

72+ 15 = 87

Hadley and Delaney therefore bought 128 markers all in total.

Hope I helped ! :))))))

The amount of markers Hadley and Delaney bought in all is equal to 128 markers.

Given  the following data:

To determine the amount of markers Hadley and Delaney bought in all:

First of all, we would determine the total number of marker in each box.

For Hadley:

[tex]Hadley = 7 \times 8[/tex]

Hadley = 56 markers

For Delaney:

[tex]Delaney = 6\times 12[/tex]

Delaney = 72 markers

Now, we can find the total markers:

[tex]Total \;markers = Hadley + Delaney\\\\Total \;markers = 56+72[/tex]

Total markers = 128 markers

Find more information: https://brainly.com/question/3600420

Your question has been heard loud and clear.

M1 = 2kg , M2=2kg , V1=10m/s V2=5m/s

Total momentum before collision = M1V1+M2V2 = 2*10 + 2*5 = 30kgm/s  

Now , by law of conservation of momentum ,

Total momentum before collision = total momentum after collision

Therefore , total momentum of objects before and after collision = 30kgm/s

Thank you