Answer:
0.927
Step-by-step explanation:
just plug it in to a algebraric calculator!
Your science teacher tells you that the next test is worth $0 points and contains 19 problems. Multiple-choice
questions are worth 2 points each and short answer questions are worth 5 points. Find how many of each type of
question will show up on the test.
Answer:
The test had
30
multiple choice questions, and
8
word problems.
Step-by-step explanation:
Which statement correctly identifies the mistake Joe made? in step 5, Joe should have added 1 to both sides of the equation instead of dividing both sides of the equation by --1. In step 2. Joe should have multiplied the first equation by 2 instead of by 3. in step 4, Joe simplified 27 + (-20) as 7 instead of simplifying to -7. In step 3, Joe multiplied the term -2y by 2 instead of by-2.
Answer:
This question is incomplete as it lacks the actual question. The question describes how Joe solved a system of equations step-by-step using elimination method. The steps used by Joe are as follows:
1. The equations given are: 2x + y = 9 and 3x - 2y = 10.
2. Multiply the first equation by 3 to get 6x + 3y = 27
3. Multiply the second equation by -2 to get -6x - 4y = -20
4. Add the equations to get -y = 7
5. Divide both sides of the equation by -1 to get y = -7
The statement that correctly identifies the mistake Joe made is: In step 3, Joe multiplied the term -2y by 2 instead of by-2.
Step-by-step explanation:
Elimination method of solving a simultaneous equation in Mathematics involves removing one variable in order to solve another variable. In this case of equations:
2x + y = 9
3x - 2y = 10
Joe eliminates the x variable in order to solve for the y variable first. To do this;
- In step 2, he correctly multiplies the first equation by 3 to get 6x + 3y = 27
- In step 3, he multiplies the second equation by -2 to INCORRECTLY get -6x - 4y = -20
Joe made a mistake in this step 3 because he multiplied -2y in the original equation (3x - 2y = 10) by 2 and not -2. He should have gotten -6x + 4y = -20 if he multiplied by (-2). That is (-2 × -2y) to give +4y.
Solve this equation for A:
A+ [ 11 17 -8 13 ] = [ 0 1 -2 3]
011
112 =
013
014
DONE
Answer:
a11= -11 a12=-16 a13=6 a14=-10Step-by-step explanation:
I answered this question.
What is 4x4x4x5x5 using index notation
Answer: 4^3, and 5^2. This is the answer.
Step-by-step explanation:
please help, will mark brainliest
Answer:
The answer is B.
Step-by-step explanation:
Please give me brainliest i only need 2 more brainliest to get expert
Please help me out!
Answer:
A. [tex] \sqrt {38}[/tex]
Step-by-step explanation:
Since the given point lie between 6 and 7 and is close to 6.
Therefore, the given point represents the [tex] \sqrt {38}[/tex].
In the year 2000, the United States had about 100,300,000 people registered to use cellular phones. How would this number of people be written in scientific notation?
Answer:
1.003 * 10^8
Step-by-step explanation:
Given that :
The United States has about 100,300,000 registered to use cellular phones in the year 2000
100,300,000 in scientific notation:
(100,000,000) + (300,000)
(1 * 10^8) + (3 * 10^5)
To ensure equal power :
300,000 = 3 * 10^5 = 0.003 * 10^8
Hence,
(1 * 10^8) + (0.003 * 10^8)
(1 + 0.003) * 10^8
1.003 * 10^8
pleaseeee helpppp!! thank you sm:(
Answer:A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
x-5 has to be less than -2 and the inequality sign goes the opposite direction than the arrow on the number line
What is the weight of the seawater in an aquarium that is 4.4 ft long, 2.5 ft wide, and 5.3 ft high?
Answer:
The weight of the sea water in the aquarium is 3827.119 lb
Step-by-step explanation:
We start by calculating the volume of the aquarium
Since it is a cuboid, the volume will be L * B * H
= 4.4 * 2.5 * 5.3 = 58.3 ft^3
Mathematically;
Mass = density * volume
The density of sea water is 63.93 lb/ft^3
Mass = 63,93 * 58.3 = 3,827.119 lb
find the percent of the area under the density curve where x is less than 3
Answer:
The area under the density curve is equal to 100 percent of all probabilities. As we usually use decimals in probabilities you can also say that the area is equal to 1 (because 100% as a decimal is
Answer: 100%
Step-by-step explanation:
got it right on Khan
I NEED HELP lol
The Tigers, a football team, must gain 10 yards in the next four plays to keep possession of the ball. The Tigers lose 24 yards, gain 4 yards, and lose 10 yards. How many yards do they need to keep possession?
Group of answer choices
-20
20
-8
40
Answer:
Step-by-step explanation:
must gain 10 yards
they lost 24 yards
gained 4
-24 + 4 = -20
they lost 10 more
- 20 -10 = -30
x + -30 = 10
x = 10 + 30
x = 40 yards
What is the solution to the system of equations graphed below?
Answer:
a
Step-by-step explanation:
the two lines intercept at 1,-2
Answer: it is b(4,2)
Step-by-step explanation: nice
Whats the exspression equivalent to (-2x + 8.1y)
Answer:
b. 7x + 2.8y
Step-by-step explanation:
distribute the negative sign:
= -2x + 8.1 + -1(-9x + 5.3y)
= -2x + 8.1 + -1(-9x) + -1(5.3y)
= -2x + 8.1 +9x + -5.3y
combine like terms:
= (-2x + 9x) + (8.1 + -5.3y)
= 7x + 2.8y
Consider the equation 3a+0.1n=123. If we solve this equation for n, which equation would result? A. 0.1n=123-3a B. N=123-3a-0.1 C.N=1,230-30a D. 3a-123 over 0.1 =n
Answer:
n = (123 - 3a) / 0.1
Step-by-step explanation:
Given:
3a + 0.1n = 123
Solve for n
3a + 0.1n = 123
Subtract 3a from both sides
3a + 0.1n - 3a = 123 - 3a
0.1n = 123 - 3a
Divide both sides by 0.1
n = (123 - 3a) / 0.1
The resulting equation if 3a + 0.1n = 123 is solved for n is n = (123 - 3a) / 0.1
Un delfinariu are un bazin in forma de cilindru cilcular drept. Pentru a oferi mai multe reprezentati, bazinul este impartit in doua parti egale printr un perete dreptunghiular cu aria de 300 m patrati. Se stie ca raza bazei cilindrullui este de 15 m. Aflati inaltimea bazinului.
Answer:
Înălțimea bazinului este de 20 m
Step-by-step explanation:
Raza de bază a bazinului cilindric = lățimea peretelui dreptunghiular = 15 m
Suprafața peretelui dreptunghiular = lungime × lățime = 300 m²
300 m² = lungime × 15 m
lungime = 300 m² / 15m
lungime = 20 m
Lungimea peretelui dreptunghiular = înălțimea bazinului cilindric = 20 m
Prin urmare, înălțimea bazinului = 20 m.
A tanker truck fills the gas station’s reservoir at the rate of 12 1/2 gallons per minute.
If the reservoir was empty and it is now 35 gallons full, how long has the tanker been filling the reservoir?
Answer: 2.8 minutes
Step-by-step explanation:
If it takes 12.5 gallons per minutes to fill the reservoir, then we have to divide 35 and 12.5.
35 ÷ 12.5 = 2.8 minutes
Since it takes 12.5 gallons per minutes to fill the reservoir, it will take 2.8 minutes to fill the reservoir.
hope this helps!
Answer:
A submarine descends at a rate of 2.6 kilometers per hour.
If the ocean floor is 6.24 kilometers below sea level, how long will it take the submarine to descend to the ocean floor?
Round your answer to the nearest tenth. Enter your answer in the box.
answer:
2.4
hours
Step-by-step explanation:
A 13-foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 5 feet from the base of the building. How high up the wall does the ladder reach?
The ladder reaches ___ feet up the wall (round to the nearest humdredth)
Answer:
12
Step-by-step explanation:
can some one help me
Answer:
children is 48 and adults is 8.25 and children is 90
Step-by-step explanation:
Yoko, Bob, and Chang have a total of $120 in their wallets. Bob has $10 less than Yoko. Chang has 3 times what Bob has. How much do they have in their wallets?
Lance earned $27 for mowing 3 lawns. What is the rate earned per lawn mowed?
A 9 cm piece of cooper pipe cost 63 cent what is the unit price
Answer:
7 cents per centimeter
Step-by-step explanation:
2x +12 - 8x - 7= -10x + 2 + 4x +3.
Answer:
r37grqigohw
Step-by-step explanation:
A fair spinner has 10 equal sections.
A
A
B
B
C
A
A
Put a cross on the scale to show the probability of landing on the letter A.
Answer:
there would be a possibility
Step-by-step explanation:cuz ratio form would be A:B:C
(4:2:1)
BRACKETS IS WHET U NEED TO LOOK AT
PLS HELP ME!!!!
I have the answer I just need to show the work
Find the measure of angle A.
Answer: 28 degrees
Answer:
32x+4+20+4+6x=180
38x+28=180
38x=152
x=4
4+6(4)
4+24
28
Step-by-step explanation:
please give brainliest!!
Step-by-step explanation:
(32x+4)+20+(4+6x)=180
38x+28=180
38x=152
(38x)/38 = (152)/38
x=4
plug into angle A:
4+6x
4+6(4)
28
The ratio of women to men working at a grocery store is 4 to 5. There are 16 women working at the store . What is the total number of people working at a grocery store?
Answer:
36 people
Step-by-step explanation:
The ratio of women to men working at a grocery store is 4 to 5.
The ratio =
Women : Men
4 : 5
The sum of the proportion is 4 + 5 = 9
There are 16 women working at the store .
Let us represent the total number of people working at a grocery store as x
Hence:
4/9 of x = 16 women
4/9 × x = 16
4x/9 = 16
Cross Multiply
4x = 16 × 9
x = 16 × 9/4
x = 36 people
The total number of people working in the grocery store is 36 people
8. Transform y = f(x) by translating it right 2 units. Label the new function
g(x). Compare the coordinates of the corresponding points that make
up the 2 functions. Which coordinate changes, x or y?
Please help ASAP!
Answer:
The X-coordinate changes.
Step-by-step explanation:
a bank offers two different types of interest on saving accounts
account 1 pays 5.5 % simple interest
account 2 pays 5% interest compounded annually
deposits of 1000 are made into the accounts of each type. no additional Including
withdraws or deposits are made.
what amount is the closest to the interest earned in 5 years.
Answer:
(a) The closet to the simple interest eaened in 5 years is $275.00.
(b) The closet to the compound interest earned in 5 years is $276.28.
Step-by-step explanation:
These can be determine as follows:
(a) Simple Interest
The interest earned and be determined using the simple interest formula as follows:
Simple interest = P * R * T ....................... (1)
Where;
P = Principal = $1,000
R = interest rate = 5.5%
T = term = 5
Substituting the values into equation (1), we have:
Simple interest = $1,000 * 5.5% * 5 = $275.00
(b) Compound Interest
The interest earned and be determined using the compound interest formula as follows:
Compound interest = P(1 + R)^T - P ....................... (2)
Where;
P = Principal = $1,000
R = interest rate = 5%, or 0.05
T = term = 5
Substituting the values into equation (2), we have:
Compound interest = $1,000(1 + 0.05)^5 - $1,000 = ($1,000 * 1.05^5) - $1,000 = ($1,000 * 1.2762815625) - $1,000 =$1,276.28 - $1,000 = $276.28
Interest earned in savings Account 1 = 275
Interest earned in savings Account 2= 276.282
What is the difference between simple interest and compound interest?Simple interest is based on the principal amount of a loan or deposit. In contrast, compound interest is based on the principal amount and the interest that accumulates on it in every period.
interest earned by savings account 1
I₁=P*R*T/100
where,
P= Principal
R= rate of simple interest
T = time
I₁=1000*5.5*5/100
compound interest I₁=275
Interest earned by savings account2
amount A after n years= [tex]P(1+\frac{r}{100} )^n[/tex]
where,
A= amount received after 5 years
P= principal
r = rate(compound annually)
n = time
[tex]A = 1000(1+\frac{5}{100} )^5\\\\A=1276.282[/tex]
Compound interest I₂ = 1276.282-1000=276.282
Therefore,
interest earned in savings Account 1 = 275
interest earned in savings Account 2= 276.282
to get more about simple and compound interest visit:
https://brainly.com/question/3575751
answer soon!!!!!!!!!!!!!!!!!!
Expressions that are used so much that people get tired of hearing
them are called:
similes
metaphors
cliches
idioms
Answer:
cliches idioms
Step-by-step explanation:
Equalivent fraction for 5/6
Answer:
10/12 , 15/18 , 20/24
Step-by-step explanation:
Which expression is equivalent to (7^3)^−2?
Answer:
Step-by-step explanation:
We are missing the rest of the question.
However (7^3)^-2 would equal to 343^-2 which would equal to 1/117649 or 8.49985 * 10^-6.
If you break it down more:
7*7*7= 343 Take that to the -2 power is 1/117649 or 8.49985*10^-6
If none of these is part of your choice, please supply the choices and I can try to help some more.