How many solutions does the following equation have?
-4(2 + 5) = -40 - 20
Answer:
0
Step-by-step explanation:
I don't see any variables so simplify both sides.
-8 - 20 = -40 - 20
-28 = -60
is a false statement. No solutions.
Which set of national numbers is arranged from least to greatest?
Answer:
the first one
Step-by-step explanation:
negative . 50 then -.20 1/9 then one
Help! Will give brainiest
Which models show the problem 4/6 ÷ 2/6 = 2? Check all that apply.
Answer:
1st, 2nd, and 3rd models are correct
Step-by-step explanation:
"Y varies directly as x'. If y = 9 when x = 3, find y when x = 18. What is the constant of variation (k)?
Answer:
Y = 21 when x=18
X varies 3 numbers subtracted from Y so now it comes as x= 18 then y is plus 3 the the number shown on x which is 18+3 then you get 21.
These figures are similar. The
area of one is given. Find the
area of the other.
3 in
area=24 in
6 in
[ ? Jin?
Answer:
B. 4,028 m2
Hope this helps!
pls help i dont get it
Answer:
2 and 3 tickets are the same price
Step-by-step explanation:
Well you would have to divide y/x and then you would get the answer of 12.25 for the first 2.
because like a population has a standard deviation of 11 what is the approximate standard error of the mean for a sample size of 150
Answer:?
Step-by-step explanation:
Question 1
5 pts
(07.01 LC)
What is the value of x in the equation -6 + x = -2? (5 points)
8
-4
-8
4
Answer:
4
Step-by-step explanation:
(2x +1) (5x +5)
HELPP WITH THIS ONEEE PLEASEEE
Answer:
12
Step-by-step explanation:
I need help with this ratio table please!
Answer:
(Down there)
Step-by-step explanation:
ok so, heres what to put in the empty boxes for the dog food:cost
40 : $44
60 : $66
80 : $88
70 : $77
And heres what to put for the 2nd boxes
16 : $20
24 : $30
32 : $40
40 : $50
A summer picnic is being planned and 96 employees are invited to vote for one of the
following themes: Sun, Surf, or Sand. Seventy-five percent of the employees
participate in the voting.
If there are 19 votes for Sun and 27 votes for Surf, how many employees voted for
Sand?
24
26
Ο Ο Ο Ο Ο
38
42
50
Select all expressions that are equal to 8-12-(6+4).
8-6-12+4
B.
8-12-6-4
C.
8-12+(6+4)
8-12-6+4
D.
E.
8-4-12-6
Answer:
69.420
Step-by-step explanation:
idc
Answer is B and E
The other ones aren’t correct because there adding 4. It’s a negative 4, so any with the -4 would be correct
Beth bought two pairs of earrings for $12.00 each. She also had to pay 6% sales tax. What was her total bill?$12.72$19.20$25.44$38.40
Tim is collecting leaves for a science project. He needs 300 leaves. So
far he has reached 50% of his goal. How many leaves has Tim
collected?
Answer:
150 leaves
Step-by-step explanation:
50% is helf of the whole, so you just want to divide 300 by 2, and you get 150. I hope this helps :)
Answer:
150
Step-by-step explanation:
Convert 50% into a decimal by dividing by 100.
Next multiply 0.5 * 300
150
Classify the polynomial by Degree and number of Terms
b^3+2b^2-b^2+3b^2+25
A. Quadratic Polynomial
B. None of the answers apply.
C. Cubic Trinomial
D. Polynomial
Answer:
C) Cubic Trinomial
Step-by-step explanation:
First, we combine like terms to simplify the polynomial. Like terms means having the same variable and exponent.
We get this expression: b^3+4b^2+25
There are 3 terms in this polynomial. Thus, it classifies as a trinomial. And its highest degree is 3, so it’s a cubic trinomial
405\450 = 9/10
process
Answer:
Correct
Step-by-step explanation:
Just divide both the numerator and the denominator by their common factors.
First of all factor both of the numbers.
405=5*3^4
450=5^2*3^2*2
Now line it up.
5*3*3*3*3
---------------
5*5*3*3*2
Now we can cancel out some numbers and get
3*3
-----
5*5
Now we actually multiplies them again and get.
9/10
This is the process of how to get it hope it helped!
Riku wrote the expression –13 - 5 for this situation
on the previous screen:
The temperature was -13°F and then fell 5 degrees.
What was the final temperature?
Charlie wrote the expression -13+ (-5).
Who is correct?
The expression value is -18 °F.
Riku and Charlie are both correct.
What is an expression?One mathematical expression makes up a term. It might be a single variable (a letter), a single number (positive or negative), or a number of variables multiplied but never added or subtracted. Variables in certain words have a number in front of them. A coefficient is the number used before a phrase.
Given:
The temperature was -13 °F and then fell 5 degrees.
That means,
-13 -5 = -18 °F
Riku wrote the expression -13 - 5 for this situation.
That means,
-13 -5 = -18 °F
Charlie wrote the expression -13+ (-5).
That means,
-13 -5 = -18 °F
Therefore, both are correct.
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A company produces only one type of light bulbs. The light bulbs are being manufactured two factories: Factory A and Factory B. Factory A produces 10, 000 bulbs every year, while Factory B produces 2, 000. Also 2% of bulbs from Factory A are defective while 1% of bulbs from Factory B are. After production all bulbs are brought to the same facility and shipped to retail stores.
Required:
a. What is the probability that a bulb bought from a store is defective?
b. Given that the bulb is defective, what is the probability that it was produced by Factory A?
c. Given that the bulb is functional, what is the probability that it was produced by Factory A?
Answer:
Follows are the solution to the given points:
Step-by-step explanation:
Given values:
[tex]P(\frac{D}{A})=0.02 \\\\P(\frac{D}{B})=0.01\\\\P(A)=\frac{10,000}{10,000+2000} =\frac{10}{12} =\frac{5}{6} \\\\P(B)=\frac{1}{6}\\\\[/tex]
For point a:
[tex]P(D) =p(D\cap A) +P(D \cap B)\\\\[/tex]
[tex]=P(\frac{D}{A}) \times P(A) + P(\frac{D}{B}) \times P(B)\\\\=0.02 \times \frac{5}{6} + 0.01 \times \frac{1}{6}\\\\=\frac{0.1}{6} + \frac{0.01}{6}\\\\=\frac{0.1+0.01}{6} \\\\=\frac{0.11}{6} \\\\=\frac{11}{600} \\\\=0.0183[/tex]
For point b:
[tex]P(\frac{A}{D})= \frac{P(\frac{D}{A}) \times P(A)}{P(D)}\\\\[/tex]
[tex]= \frac{0.02 \times \frac{5}{6}}{\frac{11}{600}}\\\\= \frac{0.02 \times \frac{5}{6}}{0.0183333333}\\\\= \frac{0.02 \times 0.833333333}{0.0183333333}\\\\= \frac{0.0166666667}{0.018}\\\\=0.9090 \approx 0.0991[/tex]
For point c:
[tex]P(\frac{A}{D^C})=\frac{P(\frac{D^c}{A}) \times P(A)}{P(D^c)}\\\\[/tex]
[tex]= \frac{1-0.02 \times \frac{5}{6}}{1- \frac{11}{600}}\\\\= \frac{0.98 \times \frac{5}{6}}{0.98}\\\\=\frac{5}{6}\\\\=0.833[/tex]
Which of the following is true about the function below?
Answer:
The answer is D.
A researcher wants to make a 99% confidence interval for a population proportion. A preliminary sample produced the sample proportion of 0.46. The sample size that would limit the margin of error to be within 0.061 of the population proportion is:
Answer:
the sample size that would limit margin of error is 443
Step-by-step explanation:
The confidence level = 99 percent = 0.99
1 - alpha = 0.99
Alpha = 1 - 0.99
= 0.01
The critical z value for alpha = 0.01 = 2.576
Sample proportion = 0.46
Margin of error E = 0.061
Sample size = p(1-p)(Z/E)²
= 0.46(1-0.46) x (2.576/0.061)²
= 0.46(0.54)(42.23)²
= 0.2484 x 1783.37
= 442.989
= 443
The sample size would be 443
L 4.12.2 Test (CST): Percents, Ratios, Proportions, and Rates
QUOSLUIT VIOU
Which pair of ratios will make a proportion?
O A. and i
O B. and 12 물
O c. and
O
o D. / and 24
20
The correct pairs which represent the pair of ratios will make a proportion are,
(A) 2/3 and 4/9
(B) 5/15 and 4/12
What is mean by Ratio?A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities. And, Total quantity gives after combine as x + y.
We have to given that;
The pairs of ratio are,
(A) 2/3 and 4/9
(B) 5/15 and 4/12
(C) 4/12 and 6/24
Now,
From option A;
⇒ 2/3 and 4/9
⇒ 4/ 9 = 2/3
Hence, It make a proportion.
(B) 5/15 and 4/12
5 / 15 = 1 / 3
4 /12 = 1 / 3
Hence, It make a proportion.
(C) 4/12 and 6/24
4/12 = 1/3
6/24 = 1/4
Hence, It don't make a proportion.
Thus, The correct pairs which represent the pair of ratios will make a proportion are,
(A) 2/3 and 4/9
(B) 5/15 and 4/12
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Complete question is this,Which pair of ratios forms a proportion?
(A) 2/3 and 4/9
(B) 5/15 and 4/12
(C) 4/12 and 6/24
plz help will give brainliest
The number of cans the soup kitchen has is represented by the equation, y = -63x + 825, where x represents the number of days and y represents the number of cans. How many cans will the soup kitchen have left after 10 days?
Answer:
195 cans
Step-by-step explanation:
Start by multiplying -63 by 10, since 10 should be in place of x. You will get -630. Add 825 to -630 and you will get 195.
if mary smith and karen white have identical sat scores and quality of letter, but mary smiths high school gpa is 1.5 point higher than karen, how much higher will marys college gpa be than karens
Required table is attached below :
Answer:
0.56
Step-by-step explanation:
Since they both have :
SAT score is the same ; quality of letter is the same ;
High school GPA is 1.5 points higher ;
Therefore, to determine how much Mary's GPA will be higher than Karen's :
Multiply the number of points by the Coefficient of high school GPA Given in the regression table attached below :
High school GPA Coefficient = 0.37635
Number of points = 1.5
= 1.5 * 0.37635
= 0.564525
= 0.56
there was a 26% chance it would rain tomorrow what is the probability that it wouldn’t
Answer:
74%
Step-by-step explanation:
what is 12.25 divided by 2.5
Answer:
4.9
Step-by-step explanation:
solve problems
5 1/2×3 1/3
Pls help due tonight. BRIANLIEST IF CORRECT. Prob easy tho.
Answer:
-2 and -10
Step-by-step explanation:
-2×-10=20
-10+-2=-12
Hope this helps! :)
Round your answer to the nearest hundredth.
Answer:
41.41 degrees
Step-by-step explanation:
cos(a) = 6/8
arccos(6/8) = a
a = 41.41 degrees
Answer:
41⁰
Step-by-step explanation:
you can use cosA=adj/hyp to find the angle A.
adj=6
hyp=8
then cos-¹(6/8)=A
A=41.4096...
Solve 8 • w ≤ 72. Graph the solution.
Please help
Answer:
(-infinity, 9]
Step-by-step explanation:
The solution of the inequality is w ≤ 9 and the graph is attached.
What is an inequality?In Algebra, inequality is a Mathematical statement that shows the relation between two expressions using the inequality symbol. The expressions on both sides of an inequality sign are not equal.
Given is an inequality, 8w ≤ 72, we need to graph it,
8w ≤ 72
Divide by 8 on both sides
w ≤ 9
For graph, draw a number line and label a point as 9.
Draw a solid line facing to the left and having a closed point at 9.
The line should not extend past 9.
Hence, the solution of the inequality is w ≤ 9
Learn more about inequality, click;
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If P = (-2,5) and
Q = (1,9), find the distance PQ
giving brainliest!
Answer:
Step-by-step explanation:
[tex]d^2=(x_2-x_1)^2+(y_2-y_1)^2\\ \\ d^2=(-2-1)^2+(5-9)^2\\ \\ d^2=9+16\\ \\ d^2=25\\ \\ d=\sqrt{25}\\ \\ d=5[/tex]
Answer:
PQ = 5
Step-by-step explanation:
Distance Formula
d = [tex]\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2 }[/tex]
d = [tex]\sqrt{{(1} - -2)^2 + (9 - 5)^2 }[/tex]
d = [tex]\sqrt{3^2+4^2}[/tex]
d = [tex]\sqrt{9+16}[/tex]
d =[tex]\sqrt{25}[/tex]
d=5
PQ = 5