Fill in the missing numbers to create an equivalent expression (21 + 12)=_( _ + _ )
what's the blank supposed to be?
Answer:
(21+12)=3(7+4)
This is true because they both equal 33.
What are the solutions of the equation X4-9x2 + 8 = 0? Use u substitution to solve.
O x = 1 and x = 2.13
O x=+1 and x=+22
O x= ti and X=
O x = ti and X=25
=+21/2
Answer: the answer is B
Step-by-step explanation:
The solutions of the equation X⁴-9x² + 8 = 0 is ±2√2 and ±1
How to solve equation using substitutionX⁴-9x² + 8 = 0
Let x² = y
Then the equation becomes y² - 9y + 8 = 0
This is in the form ax² + bx + c = 0
We can solve by using quadratic formula for finding roots
x = {-b ± √(b² - 4ac)} / 2a
where,
a = 1, b = -9, c = 8= {-(-9) ± √((-9)2 - 4(1)(8))} / 2(1)
= {9 ± √(81 - 32)} / 2
= {9 ± √49} / 2
= {9 ± 7}/2
= 16/2, 2/2
= 8, 1
y = 8,1
x = ±2√2, ±1
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Basil, Oscar and Sue share 43 sweets.
Sue gets the largest share.
What is the smallest possible number of sweets Sue could get?
Answer:
Sue gets the largest share of 15, which is the smallest possible number of sweets Sue could get.
Step-by-step explanation:
Basil, Oscar, and Sue share 43 sweets.
Sue gets the largest share.
Let us divide the 42 sweets by 3
42/3 = 14
It means 3 equal parts of 14 make the sum 4.
i.e. 14+14+14 = 42
Since Basil, Oscar and Sue share 43 sweets, which is 1 plus 42.
So, add that 1 to Sue. i.e. 1+14 = 15
so 15+14+14 = 43Thus, Sue gets the largest share of 15, which is the smallest possible number of sweets Sue could get.
What is the vertex of the function x^2+x-5
Answer:
y=(x+1/2)^2-21/4
Step-by-step explanation:
Some algae contains up to 50% oil by weight. How much oil is in a 7.3-ounce sample of this type of algae?
Answer:
3.65
Step-by-step explanation:
this is the same as saying
50%of 7.3
which is 3.65
A rectangular patio is 9 yd 2 ft long and 5 yd 2 ft wide. What is the perimeter of the patio in yards?
Answer:
Step-by-step explanation:
perimeter = 2(length + width)
= 2(9 yd 2 ft + 5 yd 2 ft)
= 2(14 yd 4 ft)
= 28 yd 8 ft
Kevin can complete 45 multiplication problems in 2 minutes. What is the unit rate?
Answer: 22.5
Step-by-step explanation: 45/2
Answer:
0.04 4 is repeated
Step-by-step explanation:
help please :((((((((
You bought a bag of cat food for $4.75 and a bag of dog food for $12.59. How much more did you spend on the dog food?
Answer:
$7.84 more
Step-by-step explanation:
To find how much more you spent on dog food, find the difference between the two prices:
12.59 - 4.75
= 7.84
So, you spent $7.84 more on the dog food
A
6) Find Total Surface Area of the shape.
9 km
3 km
7
5 km
4 km
Answer:
120km^2
Step-by-step explanation:
9x3=27
9X5=45
9x4=36
3x4/2=6
3x4/2=6
27+45+36+6+6=120
If the prime factors of a number are all the prime numbers less than 10 and no factor is repeated, what is the number?
Answer:
210Step-by-step explanation:
Prime less than 10:
2, 3, 5, 7The number is:
2*3*5*7 = 210What is angle A and B??
Answer:
A=45 b=110
Step-by-step explanation:
I used a calc
Answer:
A=135 b=200
Step-by-step explanation:
135+200+25=360
X+(x+65) +25=360
Subtract 25 from both sides
X+ (x+65)=335
Combine like terms
2x +65=335
Subtract 65 from both sides
2x =270
Divide by 2
X=135
To get b you just do 135+65=200
What expressions are equivalent to 3(4x+3)?
Answer: B, D, E
Step-by-step explanation: Its very easy to check, For B, you notice that it is the same, only the numbers are swapped. In multiplication, this is perfectly fine. For D, I just knew that the answer was 12x+9. And in D, there are 3 4x and 3 threes', so that one was correct. And for E, all you have to do is to multiply accordingly to the distributive property
given f(x)=2x^2 and g(x)=4x-5, the composition f(g(x)) is equal to 32x^2-80 x+53 now find an expression for g(f(x))
Answer:
the answers you'd put in the box are 8 and 7.
when the drop down question pops up, the answer i commutative.
Step-by-step explanation:
i got it right lol
629 divided by the number c equals 17 what is c answer fast WILL MARK BRAINLY!!
Answer:
c=37
Step-by-step explanation:
The answer c is 37.
What is Division?Division is one of the operation in mathematics where number is divided into equal parts as that of a definite number
Here is is given that,
629 divided by the number c equals 17.
Here 629 is the dividend, c is the divisor and 17 is the quotient.
We have to find the value of the divisor.
Mathematically the given statement can be written as,
629 / c = 17
Multiplying both sides of the equation with c, we get,
629 = 17 c
Dividing both sides by 17,
c = 629 / 17
c = 37
Hence the value of c is 37.
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Work out the area of this trapezium.
15m
6m
10m
Answer:
105m²
Step-by-step explanation:
15+6=21
21÷2=10.5
10.5x10=105
If ∆ABC congruent ∆DEF, which of the following can you NOT conclude as being true?
A. AC congruent DF
B. ‹B congruent ‹E
C. AB congruent EF
D. ‹C congruent ‹F
Answer:
I believe the answer would be C (sorry i messed uo the first time)
Answer:
C
Step-by-step explanation:
A total of 60 children signed up for hockey there were 3 boys for every 1 girl that signed up how many of the children who signed up for hockey where girls
45 boys and 15 girls
the sum of a number and 9, divided by 4, is greater than or equal to -2
Answer:y – 9. 4 less than a number. y - 4
Step-by-step explanation:
If the sum of a number and 9, divided by 4, is greater than or equal to -2, the number is -17.
What is inequality?A collection of two or more inequalities in one or more variables is known as a system of inequalities. When there are multiple constraints on a problem's potential solutions and a range of potential solutions are needed, systems of inequalities are used. The maximum or minimum values of a situation with multiple constraints are frequently determined using a system of linear inequalities.
It is given that,the sum of a number and 9, divided by 4, is greater than or equal to -2
Suppose the number is n,
(n+9)/4≥-2
n+9≥-8
n≥-8-9
n≥-17
Thus, if the sum of a number and 9, divided by 4, is greater than or equal to -2, the number is -17.
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find the sum seven and twenty-five hundredths added to nine and four tenths
Answer:
16.65
Step-by-step explanation:
7.25 + 9.4 = 16.65
When you flip a shape over the x-axis and then thy- axis is it the same as rotating 180 degrees counterclockwise?
Answer:
yes
Step-by-step explanation:
5x +7y =19, -5x - 3y = 11
Whats the best method to solve this equation?
- Elimination
- substitution
- these equations are unsolved
-
one-step Equation
solve for V
26=8+v
Answer:
v = 18
Step-by-step explanation:
26 = 8 + v
v = 26 - 8
v = 18
Math:hey everyone I have a quick question, Ps the picture is there!
Answer:
3/8 < 7/16 < 11/20 < 5/6
Step-by-step explanation:
The toll on a highway is based on the number of miles driven. If the toll on a 15-mile stretch of highway is $0.60, find the cost to drive a 80-mile stretch.
Answer:
$3.20
Step-by-step explanation:
We have
15-mile stretch = $0.60
80-mile stretch = x
Cross Multiply
15 × x = 80 × $0.60
x = 80 × $0.60/15
x = $3.20
Hence, the cost to drive a 80-mile stretch is $3.20
If y = x is compressed by a factor of 1/2 and translated up one unit, the new Function would be:
I’m so confused may sb help please
Answer:
Line L has a slope of 1 and Line k has a slope of 2.
Step-by-step explanation: You can figure this out by using the rise (up) over run (left/right) method. Line l had 1/1 which equals 1 and line K was 2/1 which equals 2!
Answer: it is D
Step-by-step explanation:
line L hits a new point every 1 point. Line
K hits a new point at every 2 points.
How are theses two sequences similar?
Answer:
I LOVE POINTS!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
Answer:
Could you please insert the sentences so I can help?
If X=4, is each statement true or false? plsssss helpp me it due today
A. x/4=1
B. -8=2x
C. x exponent 2 = ( -16)
D. -12 = x times (-3)
E. 12=x+ x+ x
F. x + 4 = -8
Answer:
A.True
B.False
C.False
D.True
E.True
F.False
Step-by-step explanation:
A. It's true because 4/4 is 1
B. It's false because 2×4 is 8 not -8
C. x exponent 2, 4 exponent 2 is 16 not -16
D. 4×(-3) is -12 so it's true
E. ×+×+×, 4+4+4 is 12 so again it's true
F. ×+4, 4+4=8 not -8
I think the answers are this!
Jessica and her father are comparing their ages. At the current time, Jessica's father is 24 years older than her l. Three years from now, Jessica father will be five times her age at the point
Answer:
Jessica is currently 3 years old and her father is 27 years old.
Step-by-step explanation:
System of Equations
Let's call:
x = Jessica's age
y = Jessica's father's age.
There are two conditions:
1: Jessica's father is 24 years older than her or, equivalently:
y = x + 24
2: Three years from now, he will have five times her age.
Three years from now, Jessica will have x+3 years, and her father will have y+3 years, thus:
y + 3 = 5( x + 3 )
Substituting the first condition into the second:
x + 24 + 3 = 5( x + 3 )
Operating:
x + 27 = 5x + 15
Subtracting x and 15:
27 - 15 = 5x - x
12 = 4x
Solving:
x = 12 / 4 = 3
x = 3
y = 3 + 24 = 27
y = 27
Jessica is currently 3 years old and her father is 27 years old.