Answer:
x²+2x+7-21=0
x²+2x-14. =0
x²+2x. =14
x²+2x+1. =14+1
(X+1)². =15
X+1. =+/-√15
X=-1+/-√15
X=-1+3.872983346207
=2.872983346207(greatest solution) round it as possible
X=-1-3.872983346207
=-4.872983346207
please help, seventh grade math problem
Answer:
12
Step-by-step explanation:
divide into two shapes. the first one being 2 x 4 units and the second being 2 x 2.
2 x 4 = 8
2 x 2 = 4
8 + 4 = 12
The answer is 12 square units.
Please mark brainliest if it was correct and helped!
Answer:
12
Step-by-step explanation:
just count the blocks
brainliest please???
Please help me thank u
Answer:
done
Step-by-step explanation:
Answer:
5/10k - 3/5
Step-by-step explanation:
by fraction we know about LCM
2/5k + 1/10k - 3/5
5/10k-3/5
onvert the unit of weight. Enter your answer in the box.
3/4 lb =
oz
Answer:
3/4 ib = 12 oz
Step-by-step explanation:
A map scale reads: 2 inches = 25 miles. Which distance does 6 inches represent
Answer:
the other side
Step-by-step explanation:
Answer:
75 miles
Step-by-step explanation:
2 * 3= 6
25 * 3= 75
I
Don’t understand this can someone answer it
Answer:
3x+88+x+36+2x-10=180 (being straight line)
6x+114=180
6x=180-114
x=66/6
x=11
Step-by-step explanation:
Answer:
this question is very simple
we know that
if A , O and B lie on a straight line segment
then
∡AOY+∡YOZ+∡ZOB=180°
so
3x+x+x=180-----> 5x=180--------> x=180/5--------> x=36°
the answer is
x=36°
.... please mark as brainliest
A party planner bought 30 meters of ribbon to make bows. She uses 20 centimeters of ribbon to make 1 bow. What is the total number of bows the party planner can make with 30 meters of ribbon?
A. 15
B. 150
C. 1,500
D. 15,000
Answer:
B. 150
Step-by-step explanation:
1 meter = 100 centimeters
since there is 30 meters x 100 centimeters = 3000 centimeters
then divde by 20 centimeters since that is the cost to make 1 bow so
3000 / 20 = 150.
So 150 bows in total.
please help will mark brainlist!!
Answer:
x=28
y=28
Step-by-step explanation:
Equation 1:
Dived both sides by 0.75 to remove 3/4 from x.
(x-12)=16
Now, add 12 to both sides.
x=28
Equation 2:
Same here, divide both sides by 0.75.
y-12=16
Add 12 to both sides.
y=28
plss i need the rogth answer i will mark brainliest I BEG OYU PLSS
Answer:
521,400 meters squared
Step-by-step explanation:
With the 1cm = 100m scale
6.6 cm = 660m
7.9 cm = 790m
Area = 660 x 790 = 521,400 meters squared
Find the measure of an angle in standard position for each reference angle.
Step-by-step explanation:
1. 90+65= 155°
2. π+ π/6 = 7π/6 or 210°
3. 24+180=204°
4. 3π/2 + 2π/9 = (27π+4π)/18 = 31π/18
or 310°
Hi I'm bad at math the questions is -r - 20r = please help
Answer:
−21r
Step-by-step explanation:
Combine Like Terms:=−r+−20r
=(−r+−20r)
=−21r
Answer:=−21r
please click the crown button (brainliest) thanks!!hope this helps!! <3
what is the volume of a sphere if the radius is 9?
ANSWER IN TERMS OF PI !!!
Express the series using sigma notation. 1 + 4 + 16 + ... + 256.
a.
c.
b.
d.
Please select the best answer from the choices provided
A
B
C
D
Answer:
D
Step-by-step explanation:
By looking at the terms, we can notice that each term is 4 times the previous term. This means the series is geometric and we can rule out options A and B because of this. We can find the first terms of both options C and D to get:
first term c: 4
first term d: 1
The first term of our series is one, so that must mean D is the answer.
Linear Equation:
4x - 3y = 1
у
X
Answer:
x (1/4,0) y (0,-1/3)
Step-by-step explanation:
x (1/4,0)
y (0,-1/3)
The sample space of picking a 2
character password using the letters Y, P, GR,
B, O, where double letters are not allowed is
shown. Your teacher asks the class to find the
probability of choosing a password with
one Y and one P. Carlos incorrectly says that
the probability is 15. Find the correct probability
then decide which error Carlos might have
made
Answer:
[tex]Pr = \frac{1}{15}[/tex]
Step-by-step explanation:
Given
See attachment for sample space
Required
[tex]P(1\ Y\ and\ 1\ P)[/tex]
From the attached sample space, we have:
[tex]n(S) =30[/tex] ---- total outcomes
[tex]n(PY) = 2[/tex] --- outcomes with 1 Y and 1 P = 2 i.e. (P,Y) and (Y,P)
So, the required probability is:
[tex]Pr = \frac{n(PY)}{n(S)}[/tex]
[tex]Pr = \frac{2}{30}[/tex]
[tex]Pr = \frac{1}{15}[/tex]
The error is that; Carlos omitted the numerator
. if 3, 2, y, 10 are in proportion, find the value of y
Answer:
y = 15
Step-by-step explanation:
Given :
3, 2, y, 10
If the numbers are in proportion :
We can thus say :
3/2 = y/10
Cross multiply
3 * 10 = 2 * y
30 = 2y
Divide both sides by 2
30 / 2 = 2y / 2
15 = y
What is the area of this quadrilateral?
2 ft
4 ft
6 ft
6 ft
4 ft
2 ft
A. 28 square feet
0
B. 48 square feet
a o
C. 18 square feet
D. 36 square feet
Answer:
the answer would be a
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
just got it correct
What is the area of the triangle?
Answer:
Area of triangle 12 ft^2 Area of shaded region 84 ft^2
Step-by-step explanation:
area of triangle 6 x 4 / 2 =12
Shaded region 96-12= 84 ft^2
What was the concentration of the drug 4 hour(s) after injection?
Answer:
it's 47÷4=11 3/4 will be your final answer
explain why a3*a2 dosnt equal a6... Plz I need help!
Answer: a^3 · a^2 ≠ a^6 as the laws of exponents states that the multiplication rule for two exponents with the same bases equates to addition, so that a^3 · a^2 = a^3+2 = a^5.
Help will give 20 points
Answer:1/3 divided by 6 equals 18
Step-by-step explanation: If you have a cloth that is 1/3 long then divide it by 6 it would look like 1/3 divided by 1/6 which would then equal 1/18.
PLEASE HELP ME
Arnold deposits $6,000 into a certificate of deposit that pays 8% interest compounded quarterly . How much interest does his account earn in the first 3 years?
Answer:
8
Step-by-step explanation:
Select all the statements about rotations that are true
A- The shapes of the figure does not change.
B- The positions of the figure does not change.
C- The size of the figure does not change.
D- The orientation of the figure does not change.
E- The coordinates of the figure do not change.
Please help I will give 100 points
Answer:
a. true
b. false
c. false
d. true
e. false
Step-by-step explanation:
A. true, a shape is not warped by a rotation
b. false, the points on the figure will change
c. false, the size is not affected by a rotation
d. true, the orientation changes in a rotation
e. false, the coordinate points on the figure are altered
Answer:
A- The shapes of the figure does not change.
C- The size of the figure does not change.
D- The orientation of the figure does not change
Find the value of (6^0 − 7^0) × (6^0 + 7^0)
Answer:
-13
Step-by-step explanation:
6-7 x 6+7
-1 x 13
-13
5 and 1/4 - 4 and 1/2
Step-by-step explanation:
answer: 3/4 or 0.75
=5 1/4 - 4 1/2
=21/4 - 9/2
= (21-9) / 4
=3/4 or 0.75
How much would you need to deposit into an account that pays 6.5% interest compounded semiannually to have $10,000 after 7 years?
Answer:
6390.56
Step-by-step explanation:
[tex]AV=PV(1+\frac{i}{n})^{nt}\\10000=x(1+\frac{.065}{2})^{7*2}\\10000=1.564807232*x\\6390.53=x[/tex]
9514 1404 393
Answer:
$6490.57
Step-by-step explanation:
The future value is given by the compound interest formula ...
A = P(1 +r/n)^(nt)
Principal P earns annual rate r compounded n times per year for t years.
Filling in the given values, we have ...
10000 = P(1 +0.065/2)^(2·7) = P(1.0325^14)
P = 10000/1.0325^14 ≈ 6390.5635
You would need to deposit $6390.57 into the account to have $10,000 in 7 years.
_____
Additional comment
Using the rounded-down result of the computation will result in a value after 7 years of $9,999.99, not quite $10,000. Rounding the computed value up to $6390.57 ensures the account balance will actually be $10,000.00 after 7 years.
If the balance is rounded to the nearest penny each time interest is added, then the balance after 7 years will be exactly $10,000.00. If there is no intermediate rounding, the resulting balance will be $10,000.01.
Most of the time, the answer key doesn't pay attention to details like this. Your expected answer may be $6390.56, or $6391 if rounded to dollars.
Colin is buying dirt to fill a garden bed that is a 9 ft by 18 ft rectangle. If he wants to fill it to a depth of 4
in, how many cubic yards of dirt does he need? If necessary, round to the nearest cubic yard. If dirt costs
530 per yd, how much will the project cost?
The project will require
|yd of dirt, and will costs
Based on Milton Friedman's observations, it is likely that he would agree that socialism provides the best government for which a free market can exist.
Please select the best answer from the choices provided
T
F
Answer:
False
Step-by-step explanation:
I did the E2020 assignment
19 POINTS the answer is not the first or second option I’m maybe think the last one
What statement best supports the box plots
Answer: kko
Step-by-step explanation iook
Write 11 k-6 (2k+5)in expanded form and find the sum
Answer:
Option B
Step-by-step explanation:
Expression representing the series is,
[tex]\sum_{k=6}^{11}(2k+5)[/tex]
Here, k = Number of terms
By placing k = 6, 7, 8, 9, 10, 11 in the expression we can get the terms of the series.
For k = 6,
(2k + 5) = 2(6) + 5
= 17
For k = 7,
(2k + 5) = 2(7) + 5
= 19
For k = 8,
(2k + 5) = 2(8) + 5
= 21
For k = 9,
(2k + 5) = 2(9) + 5
= 23
For k = 10,
0(2k + 5) = 2(10) + 5
= 25
For k = 11,
(2k + 5) = 2(11) + 5
= 27
Therefore, expanded form will be,
17, 19, 21, 23, 25, 27
There, is a common difference in each successive to previous term,
d = 19 - 17
d = 2
Number of terms 'n' = 6
First term = 17
Sum of an arithmetic sequence is given by,
[tex]S=\frac{n}{2}[2a+(n-1)d][/tex]
Therefore, sum of the given sequence will be,
[tex]S=\frac{6}{2}[2(17)+(6-1)2][/tex]
= 3(34 + 10)
S = 132
Option B will be the correct option.