Answer:
-7 and -8
Step-by-step explanation:
because 7 times 8 equals 56 and negative times a negitive equals a positive and -7 added to -8 equals -15
The pair of numbers which fulfill the given condition 2.6 & -1.76
and -17.6 & 2.6.
What is a quadratic equation ?An equation is quadratic in form if it can be written in the form of ax + bx + c = 0, where a, b, and c are constants and x is the variable.
Let x and y be the two numbers we're trying to find. We know that:
x * y = 56 (equation 1)
x + y = -15 (equation 2)
y = -15 - x (equation 3)
Substituting equation 3 into equation 1, we get:
x * (-15 - x) = 56
-x² - 15x + 56 = 0
x² + 15x - 56 = 0
Using the quadratic formula, we get:
x = (-b ± √(b² - 4ac)) / 2a
where a = 1, b = 15, and c = -56.
Substituting the values, we get:
x = (-15 ± 20.2) / 2
x = (-15 + 20.2) / 2 = 2.6
x = (-15 - 20.2) / 2 = -17.1
For x = 2.6:
y = -15 - x = -15 - 2.6 = -17.6
So, one possible pair of numbers is x = 2.6 and y = -17.6.
For x = -17.1:
y = -15 - x = -15 - (-17.1) = 2.1
So, another possible pair of numbers is x = -17.1 and y = 2.1.
Therefore, the two numbers that multiply to 56 and add to -15 are approximately -17.1 and 2.6, or vice versa.
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Solve: 5(3x + 2) -2 = 2 (1 -7x)
Answer:
x=-6/29
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
5(3x+2)−2=2(1−7x)
(5)(3x)+(5)(2)+−2=(2)(1)+(2)(−7x)(Distribute)
15x+10+−2=2+−14x
(15x)+(10+−2)=−14x+2(Combine Like Terms)
15x+8=−14x+2
15x+8=−14x+2
Step 2: Add 14x to both sides.
15x+8+14x=−14x+2+14x
29x+8=2
Step 3: Subtract 8 from both sides.
29x+8−8=2−8
29x=−6
Step 4: Divide both sides by 29.
29x/29=-6/29
x=-6/29
I need this quick!
Which equation has no solution?
|4x - 2|= -6
|-2 - x|= 9
|3x + 6|= 6
|-2x + 8|= 0
thanks so much! <3
Answer:
Hope that answers your question. The 3rd function has no solution
Can someone help me with this?
Answer:
I'm pretty sure it's 1, 2, and 3, but I'm not positive
Complete the operation. Show steps needed
without a calculator.
a) 3.76 + 0.345
Answer:
4.105000
Step-by-step explanation:
because you have to add up
158.297 rounded each number to the nearest while number
Answer:
158.3
Step-by-step explanation:
PLS HELP ASAP! GIVING BRAINLIST!
Answer: 5[tex]\sqrt{11}[/tex]
Step-by-step explanation:
25*11=275
[tex]\sqrt{25}\sqrt{11}[/tex]
25 is perfect square but 11 is not so 11 stays inside the radical while 25 is changed to 5
Find a POSITIVE and NEGATIVE co-terminal angle for
-19(pie)/8
Solve the system of equations. What is the solution?
10x – 4y = 12
5x + 2y = 14
Answer is 2
Step-by-step explanation:
four swimmers each completed 25 yards of a 100 yard relay in the order that they swam, the swimmers times are given below.
First swimmer in the relay: 13 sec
Seconed swimmer in the relay: 14.273 sec
Third swimmer in the relay: 16.04 sec
Fourth swimmer in the relay: 11.802 sec
Which statment is true
A. The differance between the slowest and the fastest 25-yard times was 5.842.
B. The teams total 100-yard relay time was 55.079 sec.
C. The last two swimmers took a total of 27.842
D. The second swimmer was 2.127 sec fasterbthen the third swimmer
Answer:
C.
Step-by-step explanation:
A. The difference between the slowest and fastest is 4.238 secs
B. The team total is 55.115 secs
C. The last two swimmers took a total of 27.842 (correct)
D. The second swimmer was faster than the third by 1.767 secs
If the discriminant is equal to 4, how many solutions are there?
Answer:1 only solution
Step-by-step explanation:
If the discriminant is equal to 4, the number of solutions there are is; 2 solutions.
According to the question;
If the discriminant is equal to 4, how many solutions are there?When the discriminant is a perfect square as in 4 above; Then the solutions to the equation are not only real, but also rational.
However, If the discriminant is positive but not a perfect square, then the solutions to the equation are real but irrational.
There are 2 rational solutions if the discriminant is equal to 4.
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Write each expression in standard from verify that your expression is equivalent to the one given by evaluating each expression using x =5
a) 3x + (2 - 4x)
b) 3x + (-2 + 4x)
c) -3x + (2 + 4x)
d) 3x + (-2 - 4x)
e) 3x - (2 + 4x)
f) 3x - (-2 + 4x)
g) 3x - (-2 - 4x)
h) 3x - (2 - 4x)
i) -3x - (-2 - 4x)
PLEASE HELP ME!!! I DONT UNDERSTAND!
A triangle’s base is 3 feet longer than twice its height, h. To create a new triangle, the base is decreased by 4 feet, and the height is increased by 2 feet. Which expression represents the area of the new triangle?
Answer:
area of the triangle =
[tex] \frac{(x - 4) \times (y + 2)}{2} [/tex]
let base be x and height y
hope it helped
PLS mark BRAINLIEST
Answer:
let height be x
base =2x+3
for new
height =x+2
base=2x+3-4=2x-1
area of new triangle=1/2_newbase×height
=1/2 (x+2)(2x-1) is required expression
Please ANSWER WILL GIVE BRAINLIEST
I think the answer is for
1 book (x = 1)
1150+25(1)= 1175
For 2 books (x - 2)
1150+25(2) = 1200
Next, to find the change in total cost, subtract these 2 answers:
1200 - 1175 = 25
Select all the equations that are true. Explain your thinking.
Answer:
A,D,E,
Step-by-step explanation:
Zea has a credit limit of $2,000 on her credit card. Each month, she charges about $200 and makes a payment of $125. Estimate the number of months that Zea can continue this pattern until she reaches her credit limit.
The number of months that Zea can continue this pattern until she reaches her credit limit will be 27 months.
What is a credit card?A credit card is a method of payment that is given to customers so they may pay a merchant for products and services depending on the debt they have accumulated.
Zea has a credit limit of $2,000 on her credit card. Each month, she charges about $200 and makes a payment of $125.
The distinction between the installment made and the charges done will be given as,
Difference = $200 - $125
Difference = $75
Partition as far as possible by this distinction to find the number of months that Zea can proceed with this example until she contacts her credit limit.
⇒ $2,000 / $75
⇒ 26.667 ≈ 27
The number of months that Zea can continue this pattern until she reaches her credit limit will be 27 months.
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What is the area of this irregular figure knowing that the formula for the area of a rectangle is l x w.
9514 1404 393
Answer:
42 cm²
Step-by-step explanation:
The attachment shows a couple of ways the figure can be considered.
a) Left and Right rectangles that are 5 cm high and 3 cm wide, together with a central rectangle that is 3 cm high and 4 cm wide. Then the total area is ...
5×3 + 3×4 + 5×3 = 15 + 12 + 15 = 42 . . . . cm²
__
b) An enclosing rectangle that is 5 cm high and 10 cm wide with a cut-out that is 2 cm high and 4 cm wide. Then the total area is ...
5×10 -2×4 = 50 -8 = 42 . . . . cm²
__
The area of the irregular figure is 42 cm².
What would the volume be of a box with a width of 2 1/4 inches, length 1 1/2 inches, and height of 4 inches?
Answer: The answer is 13.5
Step-by-step explanation:
what is the surface area?
Answer:
Hope that answers your question
A survey of 7th grade students found that 18 out of 32 students prefer to buy their lunch at school instead of bring it from home. What percent of students is that? Write your final answer as a percentage.
Answer: 56.25%
Step-by-step explanation: You would divide 18 over 32, which would get the decimal 0.5625. Then you would multiply this by 100/100 which would get 56.25/100. This would get you 56.25%.
A bag contains 100 marbles: 30 are red, 25 are green, 15 are blue, 7 are yellow, and the rest are orange.
Consider the following events, and then answer the question.
Event A: drawing a green marble
Event B: drawing a purple marble
Event C: drawing a red marble
Event D: drawing a yellow marble
Which probability is the smallest?
Answer:
a.25 out of 100 chances
b. 0 out of 100 chances
c. 30 out of 100 chances
d. 7 out of 100 chances
Step-by-step explanation:
Justin and his friends went to a movie that started at 7:35 p.m. Justin got home 50 minutes after the movie ended. What time did Justin get home?
what is x worth in 8(-6x + 14) = -128
Answer:
5
Step-by-step explanation:
Help and please make sure it’s right :)
Answer:
dam nvm the dud give out the answers
Answer:
10
Step-by-step explanation:
12x-10+8x-10=180. All horizontal lines equal 180 degrees. 12x+8x=20x. -10-10=-20. 20+180=200 200 diveded by 20 is 10
There’s an option D on the bottom you just can’t see.
Someone please help with this question
Answer:
B. 25
Step-by-step explanation:
30 + 35 + 10 = 75
100 - 75 = 25
Answer:
it's B (25%) players play the woodwinds.
Step-by-step explanation:
35% + 10% + 30%= 75%
100% - 75%= 25%
Please help me with this problem!?
Answer:
(-2.5,2)
Step-by-step explanation:
Classify this expression based on the number of terms: 4a^2+9ab^2-15b^3. A.Monomial B.Binomial C.Trinomial D.Polynomial
pls help i don’t understand!
You may need to input the number only without the "degrees".
=============================================================
Explanation:
First we'll focus on triangle DEH. Ignore the other points and values.
We have the sides of EH = 32 and DH = 49. Let x be the measure of angle DHE, which is one of the pieces of angle DHG. We'll use the cosine rule to find x.
cos(angle) = adjacent/hypotenuse
cos(H) = EH/DH
cos(x) = 32/49
x = arccos(32/49)
x = 49.227195
The value is approximate and rounded to 6 decimal places. Make sure your calculator is in degree mode. Arccos is the same as inverse cosine.
We'll come back to this value later.
---------------------
Now focus on triangle HFG. Ignore the other points.
We have the sides of FG = 38 and GH = 43
Let y be the measure of angle FHG, which is the missing piece to form angle DHG. Based on how x and y are set up, we can say x+y = angle DHG.
To find y, we'll need the sine rule this time
sin(angle) = opposite/hypotenuse
sin(H) = FG/GH
sin(y) = 38/43
y = arcsin(38/43)
y = 62.094527 which is approximate to 6 decimal places
---------------------
The last step is to add the values of x and y we found earlier
angle DHG = (angle DHE) + (angle FHG)
angle DHG = (x) + (y)
angle DHG = (49.227195) + (62.094527)
angle DHG = 111.321722
angle DHG = 111 degrees after rounding to the nearest whole degree.
----------------------
If you wanted to do this all in one step, you could say:
arccos(32/49)+arcsin(38/43) = 111.3217 which rounds to 111 degrees.
I give brainlest, please help.
I suck at these and I need help here’s the question
You buy ten pizzas and pay with $100 how much change do you receive it the pizzas cost three for $25.50
Answer:
Step-by-step explanation:
3 vegetarian pizzas cost 25.50. First we must find the cost of one vegetarian pizza.
25.5/3 = 8.5.
Each pizza costs $8.50. She bought 10 of them.
Now, we must multiply $8.50 by 10.
8.5x10 = 85.
$85 for all of the pizza.
Finally, subtract 85 from 100.
100-85=15.
You will receive $15 in change.
Answer:
Should be $15 change
Step-by-step explanation:
Since 3 pizzas cost 25.50 you times that by 3. Divide the 25.50 by 3 and add them two together. Take away that from the 100
Mateo buys 5 postcards during each day of vacation. Write an equation that shows the
relationship between the days of vacation x and the number of postcards bought y.
Write your answer as an equation with y first, followed by an equals sign.
Answer:
The answer is y=5x
Step-by-step explanation: