what is -3x^2(-8)?
please hurry!!!!
Answers
Hope this helped!!!
Have a great day!!! :)
Related Questions
The height of a triangle is 5 more than twice the base. If the area of the triangle is 21, then find the base of the triangle.
Answers
42=b(2b+5)
2b^2+5b-42=0
(2b-7)(b+6)=0
b=7/2 b=-6
take the positive value
b=7/2
Nick's phone bill is $50 per month plus $0.25 for every text message. If his bill was $108 this month, how many
text messages did he send?
Answers
Answer:
232 text messages
Step-by-step explanation:
108 - 50 = 58
[tex]58 \div .25[/tex]
232 text messages
Yw :)
108-50=58
58/.25=232
Harper Hospital treated 423 patients last week who were children, out of a total of 931 patients. The administrator calculates that they had 408 adult patients. Is the administrator's calculation reasonable? Estimate the number of adult patients by rounding the numbers to check the administrator's calculation.
Answers
Answer:
No, the administrator is wrong.
[tex]Adult = 500[/tex]
Step-by-step explanation:
Given
[tex]Total = 931[/tex]
[tex]Children = 423[/tex]
[tex]Adult = 408[/tex]
Solving (a): Is the administrator correct?
No, the administrator is wrong.
This is so because: when the number of children is subtracted from the total patient, the remaining number is not 408
Solving (b): Estimate the number of adults
By rounding up:
[tex]Adult = Total - Children[/tex]
Actual Figures
[tex]Adult = 931 - 423[/tex]
Round up
[tex]Adult = 900 - 400[/tex]
[tex]Adult = 500[/tex] -- approximately
The difference between an angle of an equilateral triangle and an angle of an isosceles right triangle could be
Answers
Answer:
In an equilateral triangle, all three sides are the same length. An equilateral triangle is always equiangular. In an isosceles triangle, two sides are the same length. An isosceles triangle may be right, obtuse, or acute.
Step-by-step explanation:
Please help, the problem is bellow
Answers
Substitute the values of x and y into the expression -3x2 + 2y2 + 5xy - 2y + 5x2 - 3y2. Match that value to one of the numbers. What matches what I'm stuck 1. x = 0.5, y = -1/10 2. x = -1, y = -3 3. x =3/4 , y = 2/5 4. x = 0, y = 2.5 5. x = √2, y = √2 6. x = 2, y = -1 The answer thing. -1 9.17 14 -11.25 1.665 0.44
Answers
Answer:
1. Putting x = 0.5, y = -1/10 gives 0.44
2. Putting x = -1, y = -3 gives 14
3. Putting x =3/4 , y = 2/5 gives 1.665
4. Putting x = 0, y = 2.5 gives - 11.25
5. Putting x = √2, y = √2 gives 17
6. Putting x = 2, y = -1 gives - 1
Step-by-step explanation:
-3x2 + 2y2 + 5xy - 2y + 5x2 - 3y2
1. Putting x = 0.5, y = -1/10
-3(0.5)^2 + 2(-1/10)^2 + 5(-0.05) - 2(-1/10) + 5(0.5)^2 - 3(-1/10)^2
= -0.75 +0.02 - 0.25 +0.2 + 1.25- 0.03
= 0.44
2. Putting x = -1, y = -3
-3(-1)^2 + 2(-3)^2 + 5(3) - 2(-3) + 5(-1)^2 - 3(-3)^2
= -3 +18 +15+6+5-27
= 14
3. Putting x =3/4 , y = 2/5
-3(3/4)^2 + 2(2/5)^2 + 5(6/20) - 2(2/5) + 5(3/4)^2 - 3(2/5)^2
=- 27/16 +8/25 +30/20 -4/5 +45/16 - 12/25
= 18/16 - 24/25 + 30/20
= 18/16 - 96+150/100
= 18/16 +54/100
= 1800+ 864/1600
= 2664/1600
=1.665
4. Putting x = 0, y = 2.5
-3(0)^2 + 2(2.5)^2 + 5(0) - 2(2.5) + 5(0)^2 - 3(2.5)^2
= 12.5 - 5.0 - 18.75
= -11.25
5. Putting x = √2, y = √2
-3(√2)^2 + 2(√2)^2 + 5(√2.√2) - 2(√2) + 5(√2)^2 - 3(√2)^2
= -6 +4+10-4+19-6
= 17
6. Putting x = 2, y = -1
-3(2)^2 + 2(-1)^2 + 5(-2) - 2(-1) + 5(2)^2 - 3(-1)^2
= -12+2 -10 +2 +20 -3
= -1
Below are two parallel lines with a third line intersecting them
X = ?
Answers
Answer:
The correct answer is x =55°
please help me with this, I don’t just want an answer only, I’d love a clear explanation so I could understand I’ll give brainliest to the person who follows my directions thank you. ♥️
Answers
I can’t figure this out please help ASAP :)
Answers
The area is 9 sq. units
Answer:
9 sq units
Step-by-step explanation:
triangle formula is 1/2B*H
Your friend has owned a dog for 9 years. This is one year less than twice as long as he has owned the cat. How long has your friend owned a cat?
Answers
Answer:
17 years
Step-by-step explanation:
hope it helps:)
Answer:
20 Years.
Step-by-step explanation:
As you could see my friend owned a dog for 9 years, and it reads that it is one year less which is 10 years since 10-1 (aka one year) equals 9 so anyways we know it's 10, and it's twice as long 10 x 2 (aka twice). which is how I got my answer... 20!
Unit 1. Lesson 10 Exit Ticket
Name:
1.) A deep-sea diver descends below the surface of the water at a rate of 5.5 feet each minute. What is the
depth of the diver after 1.3 minutes?
Write an expression to represent the problem:
Solve your expression in the box below and write your answer on the blank provided.
Answer
Answers
Answer:
The required expression for the depth is [tex]5.5t[/tex] feet.
The depth after 1.3 minutes is 71.5 feet.
Step-by-step explanation:
Let d be the depth of the sea below the surface of the water.
The rate of descending or the rate of increasing the depth, [tex]r= 5.5[/tex] feet/min.
Since, the rate is constant, so,
If the diver reaches the depth, [tex]d[/tex], in time, [tex]t[/tex]. So,
[tex]r= d/t[/tex]
[tex]\Rightarrow d=r\times t[/tex]
So, for [tex]r=5.5[/tex] feet/min, the required expression for the depth is [tex]5.5t[/tex] feet.
After time t= 1.3 minutes.
The depth, [tex]d = 5.5 \times 1.3 = 71.5[/tex] feet.
A scale drawing of a lake has a scale of 1 cm to 80 m. If the actual width was f the lake is 1,000 m, what is the width of the lake on the scale drawing?
Answers
Answer:
12,5 centimeters.
Step-by-step explanation:
We take the following proportion
[tex]\frac{1 cm}{80m} = \frac{x}{1000m}[/tex]
Which becomes:
[tex]1000 = 80x[/tex]
And then, we clear out the variable x:
[tex]\frac{1000}{80}=\frac{100}{8}=\frac{50}{4}=12,5[/tex]
And this means that the width of the lake on the scale drawing will be 12.5 cm.
Stefan is making meringue with eggs whites and sugar. he uses 50 grams of sugar for every egg white.
if Stefan is making 10 egg whites. how many grams of sugar does he use?
Answers
Answer:
500
Step-by-step explanation:
1=50 and 50 x 10 = 500
If a toy rocket is launched vertically upward from ground level with an initial velocity of 135 feet per second, then its height h after t seconds is given by the equation h(t) = -16t2 + 135t. How long will it take the rocket to return to the ground?
Answers
Answer:
The toy rocket will return to the ground at 8.44 seconds
Step-by-step explanation:
The height h of the toy rocket launched vertically as a function of the time t is given by:
[tex]h(t)=-16t^2+135t[/tex]
The rocket will return to the ground when h=0:
[tex]-16t^2+135t=0[/tex]
Factoring:
[tex]t(-16t+135)=0[/tex]
There are two solutions:
t=0, t = 135/16 = 8.4375
The first solution corresponds to the moment the toy rocket was launched, the second is the time taken by the rocket to return to the ground.
The toy rocket will return to the ground at 8.44 seconds
Which equation shows the relationship in
the table?
2
5
10
40
100 | 200
Weeks (x)
Trees Planted (y)
A y = 2x
B y = 2x + 40
C y = 20x
Dy = 40x
Answers
Answer:
It’s y=20x I think.
Step-by-step explanation:
Hey, wanna pair our account on Brainly so we can share the perks? https://brainly.com/invite/f24654201d6890e3df412bef7ec3ce86?utm_source=invite&utm_medium=link&utm_campaign=bfp_parental_feed&utm_term=parent
Answers
Answer:
No
Step-by-step explanation:
Answer: Yes, but can you look on my page and answer the questions ??
Step-by-step explanation:
Select the correct expressions in the table.
Which expressions are equivalent to the given expression?
(-V9 + V-4) - (2V576 + V-64)
-3 + 2i – 2(24) - 8i
-51 + 61
-3 + 2i + 2(24) + 8i
45 + 10i
:-3 – 2i - 2(24) + si
-51 – 6i
Answers
An expression is defined as a set of numbers, variables, and mathematical operations. The expressions that are equivalent to the given expression is -3+2i - 2(24) - 8i and -51 - 6i.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The given expression can be simplified as,
(-√9 + √-4) - (2√576 + √-64)
= (-3+2i) - 2(24) - 8i
= -3+2i - 2(24) - 8i
= -3 + 2i - 42 - 8i
= -51 - 6i
Hence, the expressions that are equivalent to the given expression is -3+2i - 2(24) - 8i and -51 - 6i.
Learn more about Expression:
https://brainly.com/question/13947055
#SPJ2
Which algebraic expression represents the perimeter of the rectangle?
2x + 2
4x + 3
Answers
Answer:
12x + 10
Step-by-step explanation:
Combine the like terms. 4x + 2x and 2 + 3. Parallel sides, 6x times 2 which is 12x. 5 times 2 which is 10. Therefore, your answer is 12x + 10
Please help! Due tonight
Answers
Answer:
what grade you in
this looks like 4th grade
what is 2,240,000,000 in scientific notation
Answers
Answer:
= 2.24 × 10^9
Step-by-step explanation:
= 2.24 × 10^9
(scientific notation)
= 2.24e9
(scientific e notation)
= 2.24 × 10^9
(engineering notation)
(billion; prefix giga- (G))
= 2240000000
(real number)
What is the value of x?
Answers
Answer:
8 degrees
Step-by-step explanation:
Mark me the brainliest and rate me please
Answer:
8°
Step-by-step explanation:
(I WILL GIVE BRAINLYIST)
A student solves the inequality -50 > 55. Each step in the student's solution is shown below. Identify where the student made any errors.
Answers
Answer: pick b
Step-by-step explanation:
Answer:
Step 2 and 3
Step-by-step explanation:
:)
please help i don’t know how to find the slope
Answers
M= slope
B= y-intercept
You replace the m and b with the info given to you in the problem.
Answer: y = -3/4x -6
Solve the proportion
8/12=20/n
Answers
Answer:
n=30
Step-by-step explanation:
14 points
correct answers pls:( i need this
Answers
subtract. write your answer in scientific notation.
(7.15×105)–(5.964×105)
Answers
Answer:
124.53
Step-by-step explanation:
7.15×105=750.75
5.964×105=626.22
750.75-626.22= 124.53
lmk if this is right or not :)
Answer with step-by-step explanation:
(7.15 × 105) - (5.964 × 105) = 124.53
750.75 - 626.22 = 124.53
Hope this helped! (brainliest please)
polygon BCDE (is congruent to) RSTU find the value of y.
Answers
If they are congruent then t=d so write the equation and solve from there, welcome im Procrastinating.
Julio walks 3 ½ miles in 1 ¼ hours.
Answers
Answer:
so whats the question??
Step-by-step explanation:
the question is in the file
Answers
Answer:
0.00024
Step-by-step explanation:
= 2.4 × 10-4
(scientific notation)
= 2.4e-4
(scientific e notation)
= 240 × 10-6
(engineering notation)
(millionth; prefix micro- (u))
= 0.00024
(real number)
what are factors of x^2+x-20
Answers
Ans: (x - 4)( x + 5)
Explanation:
Find 2 numbers knowing sum (1) and product (-20).
To find them, factor pairs of (-20) --> (-2, 10)(-4, 5). This sum is 1 = b.
Then, these 2 numbers are: -4 and 5.
y = (x - 4)(x + 5)
hi there! the answer is...
(x − 4) (x + 5)
hope this helped. have a good one!
