Answer:
2x
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASStep-by-step explanation:
Step 1: Translate
"2" = 2
"product" = multiplication
"x" = x
Step 2: Combine
2 · x
2x
Answer:
2x
Step-by-step explanation:
product is the solution for multiplying.
2*x=2x
David Read 156 books Victoria read 98 books more than David how many has Victoria read
Step-by-step explanation:
David read 156 books
Victoria read 98 books more than David
Victoria read 156 + 98 = 254 books
Solve the system by substitution or elimination. {y=2x+8y=3x−1 A. (95,585) B. (7, 22) C. (9, 26) D. (75,545)
Answer:
C. (9, 26)
Step-by-step explanation:
By Substitution:
y = 2x + 8
y = 3x - 1
---------------------
2x + 8 = 3x - 1
-x + 8 = -1
-x = -9
x = 9
Now we can choose either of the two equations given to solve for y:
y = 2x + 8
y = 2(9) + 8
y = 18 + 8
y = 26
(9, 26)
By Elimination:
For this process, I am going to rewrite the equation in "x + y" for as it will make it easier to eliminate the variables
y = 2x + 8
2x - y = -8
y = 3x - 1
-3x + y = -1
-----------------
2x - y = -8
-3x + y = -1
-----------------
-x = -9
x = 9
2x - y = -8
2(9) - y = -8
18 - y = -8
-y = -26
y = 26
(9, 26)
.
Determine the value of each of the following expressions
a.
25+310
b.
56−13
c.
45×78
d.
67÷34
evaluate the expression a +7 when a=4, b=2, and c=8
Answer:
a + 7
so "a" is 4 so
4+7=11
Hope this helps!
If a=4 and the equation is a+7 then the equation would be, with the numbers plugged in, 4+7 which equals 11.
Answer: 11
A political candidate has asked you to conduct a poll to determine what percentage of people support her.
If the candidate only wants a 5% margin of error at a 99% confidence level, what size of sample is needed?
Give your answer in whole people.
ME=8%=0.08
CL=90%=1.645
n=?
Answer:
666
Step-by-step explanation:
From this question,
a = 1-99%
a = 1-0.99
a = 0.01
5% = z(0.05) = 2.58 when we check the standard normal table
Therefore we calculate n as:
n = (z/E)²*p*1-p
Z = 2.58
E = 0.05
P = 0.5
1-p = 0.5
(2.58/0.05)²x0.5x0.5
= 51.6²x0.5x0.5
= 665.64
Therefore n is approximately 666.
Heyyy can someone help me please! xx
Answer:
option 2
Step-by-step explanation:
they have the same shape AND angle meaning they are more so similar than other options
Find the sum of all integers between −102 and 104.
The integers from -102 to 102 would all cancel, leaving you with
(-102) + (-101) + ... + 0 + 1 + 2 + ... + 101 + 102 + 103 + 104
= 103 + 104
= 207
Can anyone help it would mean alot im struggling right now
Answer:
what do you need? ^-^ I can help you
ANSWER PLS OR NOTHING WILL HAPPEN
Answer: 8
Step-by-step explanation:
Answer:
[tex]( - 4)( - 2) = \boxed{8}[/tex]
perimeter of 4cm what is
Answer:
4 cm is the best answer for this one
Not quite sure about the answer but it seems simple. Please answer!
Answer:
Its A
Step-by-step explanation:
In the figure shown, What is the value of x? a. 57° b. 123° c. 33° d. 147°
7th grade math help me pleaseeeee
Answer:
Monique is correct.
Step-by-step explanation:
You take the absolute value of both numbers (which means the positive version of it) and add that together.
7+17=24
There are 35 tickets in a bag and the ratio of winning tickets to losing tickets is 1 to 4. How many of each kind of ticket are in the bag
Answer: Number of winning tickets =7 and Number of losing tickets = 28 .
Step-by-step explanation:
Given: Total tickets = 35
The ratio of winning tickets to losing tickets = 1:4
Number of winning tickets = [tex]\dfrac{1}{1+4}\times35[/tex]
[tex]=\dfrac{1}{5}\times35\\\\=7[/tex]
Number of losing tickets = [tex]\dfrac{4}{5}\times35[/tex]
[tex]=4\times7=28[/tex]
Hence, Number of winning tickets =7 and Number of losing tickets = 28 .
Answer:
7 wining tickets and 28 losing tickets
Step-by-step explanation:
Find the value of n.
9 x -1 x n = 9 x -3
Answer:
n=3
Step-by-step explanation:
9 x -1 x n = 9 x -3
-9n=-27
9n=27
n=27/9
n=3
So value of n is 3
Calculator
2.25
What is the value of x?
D
3
Enter your answer in the box.
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4
B
X =
PLEASSSEEE HELPPP ASAPPPPP
Answer:
first one is 32
the second one is 53
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let RS = x , then PS = x²
2x² + 2x = 84
x² + x - 42 = 0
(x + 7)(x - 6) = 0
x = 6
PQ and RS are 6
QR and SP are 36
For f(t)=t−2 and g(t)=t−5, find:
a) (f/g)(t)=
Step-by-step explanation:
[tex]f(t) = t - 2 \: \: \: \: \: \: \: \: \: g(t) = t - 5 \\ ( \frac{f}{g} )(t) = \frac{t - 2}{t - 5} [/tex]
Solve 4(x-3) - 2(x - 1) >0.
{ xl x>-5)
{xl x>5]
{xl x<-5)
{xl x<5}
Answer:
{xl x > 5)
Hope This Helps!
PLS ANSWER ASAP!!!!!!!!!! I WILL GIVE BRAINLIEST FOR THE FIRST PERSON TO GET IT RIGHT
A small box (s ) contains 8 donuts and a large box (l ) contains 12 donuts. Sam bought 10 boxes of donuts containing a combined total of 108 donuts. Identify each equation that correctly describes the donut purchase. SO, THERE IS MORE THAN ONE ANSWER!!!!!
s + l = 12
s + l = 10
10s + 8l = 12
12s + 8l = 108
8s + 12l = 108
s + l = 108
Can someone Help me ASAP plss!!
Solve the equation 4(2x-1)=11+3x+5
Answer:
x = 4
Step-by-step explanation:
4(2x-1) = 11+3x+5 simply both sides
(4)(2x)+(4)(-1) = 11+3x+5
distribute
8x+(-4) = 11+3x+5
8x−4=(3x)+(11+5) Combine Like Terms
8x−4=3x+16
8x−4=3x+16
Subtract 3x from both sides.
8x−4−3x=3x+16−3x
5x−4=16
Add 4 to both sides.
5x−4+4=16+4
5x=20
Divide both sides by 5.
5x/5 = 20/5
I need help with this.
If the ordered pair (a, b) satisfies the inequality. y > x-4, three of these statements are
true. Which statement is NOT true?
You start at (3,-3). You move down 2 units and up 6 units. Where do you end? On a coordinate plane
Answer:
(3 , 1)
Step-by-step explanation:
(3 , - 3)
(3 , - 3 - 2 + 6) = (3 , 1)
Find the slope of x=(5,6), y=(0,2)
Answer:
4/5
Step-by-step explanation:
the equation of slope is y1-y2/ x1-x2
you get 4/5
All sides are congruent.
5. Is this figure a polygon?
Answer the questions below only if the figure is a polygon.
la. Is this polygon concave or convex?
1b. Is this polygon regular, equiangular, equilateral, or none of these?
1c. What is the name of this polygon?
Answer:
Yes it is a ploygon
convex
both
octagon
Step-by-step explanation:
Suppose that R(x) is a polynomial of degree 7 whose coefficients are real numbers.
Also, suppose that R(x) has the following zeros.
-5-3i, 2i
Answer the following.
(a) Find another zero of R(x).
i
Х
(b) What is the maximum number of real zeros that R (x) can have?
(c) What is the maximum number of nonreal zeros that R(x) can have?
Help, these questions make no sense!
R(x) is a polynomial of degree 7, so it has up to 7 distinct complex roots r₁, ..., r₇, and we can write it in terms of these roots as
R(x) = (x - r₁) (x - r₂) ... (x - r₇)
The coefficients of R(x) are all real, so the roots must all be complex numbers, and any of these roots with non-zero imaginary parts must occur along with their complex conjugates. This means if a + b i is a root, then is a - b i is also a root.
(a) We're told that -5 - 3i and 2i are roots to R(x), so we also know that -5 + 3i and -2i are roots.
There are 4 roots accounted for, leaving us with 3 unknown roots. These roots cannot all be non-real, because we can only count 2 of them as a conjugate pair. So we can have either
(b) at most 3 real roots, or
(c) at most 2 non-real roots and 1 real root.
Describe the graph of the line y =-5
Answer:
a horizontal line pass the y axis of -5
Please i need help
A point on a wheel has a constant angular velocity of 3 rad/s. The angle turned through in 15 seconds is:
45 rad
10π
5 rad
90π rad
