Answer:
7x + 8 = 12 - 3x
Step-by-step explanation:
Answer:
10x=4 5x=2 x=2/5
Step-by-step explanation:
it's just basic algebra stuff
HELP ME PLEASE
A certain drug is made from only two ingredients: compound A and compound B. There are 4 milliliters of compound A used for every 7 milliliters of compound B. If a chemist wants to make 1012 milliliters of the drug, how many milliliters of compound A are needed?
These are proportions.
Answer:
368 milliliters.
Step-by-step explanation:
Compound A + Compound B = 1 drug
4 + 7 = 1 drug
11 milliliters = 1 drug, so 1012 milliliters = 92 drugs
Multiply the compounds by the amount of drugs, e.g.
4 x 92 = 368 ( Compound A )
7 x 92 = 644 ( Compound B )
368 + 644 = 1012
368 milliliters of Compound A are needed to make 1012 milliliters of the drug.
Hope this helps :)
Help please I will give you the brainliest
Answer:
x=15 degrees
Step-by-step explanation:
You know that the right angle is split in half to 45 degrees and 3x degrees. Because a right angle is equal to 90 degrees, 3x has to be equal to 45. Therefore, the equation will be 3x=45. You want to make x equal one so you have to divide 3 by each side. The equation will be x=45/3. Simplify that to get x=15. Therefore, x=15 degrees.
If this has helped you, please mark this answer as the brainliest
What is the value of x? Pls help
Answer:
x=20
Step-by-step explanation:
ok so that is a pentagon and if you didnt know all of the angles in a pentagon add up to equal 540
so we setup an equation which would be
7x+4x+5+4x+10+5x-5+6x+10=540 and now we just solve for x
step 1 combine like terms
7x+4x=11x
11x+4x=15x
15x+5x=20x
20x+6x=26x
5+10=15
15-5=10
10+10=20
now we have
20+26x=540
step 2 subtract each side by 20
20-20 cancels out
540-20=520
now we have 26x=540
the final step is to divide each side by 26
26/26 cancels out
540/26=20
x=20
hope this helps :D
Mr. Suárez wants to paint his storage shed. He needs to calculate the lateral surface area of the shed so
that he will know how much paint to buy. The shed is in the shape of a rectangular prism with the
dimensions shown below.
9 Ft
6 ft
12 ft
A. 162
B. 234
C. 648
D. 324
Answer:
Lateral surface area of the storage shed = 336 ft²
Step-by-step explanation:
The shed is in the shape of a rectangular prism. The lateral surface area of the storage shed can be calculated below. The lateral area is the sides of the prism.
lateral area of a rectangular prism = 2h (l + w)
where
l = length
h = height
w = width
h = 8 ft
l = 14 ft
w = 7 ft
lateral area of a rectangular prism = 2h (l + w)
lateral area of a rectangular prism = 2 × 8 × (14 + 7)
lateral area of a rectangular prism = 16 (21)
lateral area of a rectangular prism = 336 ft²
Lateral surface area of the storage shed = 336 ft²
Sarah is having people over for her birthday party. If she orders 4 pizzas for 15 people, how many should she order for 30 people?
Answer: 8
Step-by-step explanation:
Answer: 8 pizzas.
Step-by-step explanation:If she is ordering 4 pizzas for 15 people then that simply means that the fraction is 4/15, 15*2 is 30, so that means that our next fraction (Equivalent fraction) will be like this 4/15 = -/30. What ever. Happens to the numerator must happen to the denominator and vice versa. So 4*2 is 8. So the answer is 8.
I need help with this
Answer:
they're all wrong, it should be [3,4,7,9]
Find the area of the trapezoid below:
A
B
C
D
Find two integers whose sum is 10 and product is 9
Answer:
let the numbers be x and y then by given conditions:
x + y = 10 ….. eq 1
and
xy = 9….. eq 2
from eq 2. y = 9/x
put this in eq. 1
x + 9/x = 10
x + 9= 10x
x = 1
now,
xy = 9put value of x
y = 9
Step-by-step explanation:
Hope it is helpful....
HELPPPPPPPPPP PLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
how to find mean absolute deviation
help me please this will help my grade !
Answer:
the answers B and D are correct
Answer:
B & D
Step-by-step explanation:
It can-t be A, because that would mean 20², which equals 400, would equal 20.
B is correct because even though it's negative, negative times negative = positive, which would mean that (-sqrt of 20)(-sqrt of 20)=20.
C is wrong because sqrt -20 is an imaginary number,which is a completely different topic.
D is correct because it's the same thing as B, but without the 2 negaties cancelling each other out.
E is the same as A, except it's '-20' x '-20', whcih is still 400, which is still wrong
Hope this helps :)
Anyone know what to do? I'm confused on it.
Answer:
i believe it's 2 per mile could be wrong tho :)
Step-by-step explanation:
A box holds 20 red hats, 30 blue hats, 15 green hats, and 25 white hats.
Find P(not red).
need help asap will give brainliest
Answer:
2/10
Step-by-step explanation:
Answer:5/10or 4/10
Step-by-step explanation:
It would be almost 50-50 since there are 10 but 4 one clot and 6 the other
Find the value of x that makes m||n. (7x - 23) (11x + 23)
(7x - 23)° + (11x + 23)° = 180°
7x - 23° + 11x + 23° = 180°
18x = 180° / : 18
x = 10°
Write an exponential decay function to model the situation in the photo.
Correct answer will get a Brainliest, a 5star rating, and a Thanks !
Step-by-step explanation:
The formula for exponetial equation decay is
[tex]y = a(b) {}^{x} [/tex]
where a is the initial value and b is the decay factor.
A will be 56 since that our initial value.
b will be 0.9 since we are constantly decaying by 0.9.
so our equation is
[tex]y = 56(0.9) {}^{x} [/tex]
Solve issuing Pythagorean theorem
Step-by-step explanation:
(8x8) + (16x16) = 64+256 = 320
√320 = 17.9
how do you know when the solution of equations is a precise answer and when it is an approximate answer?
Answer:
an answer is precise when it is an exact number like 10, 2, or 123.
An answer is approximate when the decimal numbers are so close that could round it, and the rounded number would be equivalent to the original number. ex: 10.98 = 11
HELP
find the solution set of the inequality 15x-4 < 29.
Answer: is actually 15×4 is 60 and 60 is greater than 29
Step-by-step explanation:
3.A cuboid has a volume of 384 cm. If the base and height are both 8cm, what is the length of
the cuboid?
Answer:
l = 6 cm
Step-by-step explanation:
Given that,
The volume of a cuboid, V = 384 cm³
The base and height are 8 cm
We need to find the length of the cuboid. The formula for the volume of a cylinder is given by :
[tex]V=l\times b\times h\\\\l=\dfrac{V}{bh}\\\\l=\dfrac{384}{8\times 8}\\\\l=6\ cm[/tex]
So, the length of the cuboid is 6 cm.
The system of equations y = -2x+4 and
y = -x - 3 is graphed below. What is the
solution to the system of equations?
Y
67
Nyh
Х
3-2
UN
-5
-6
Answer:
(3,-2)
Step-by-step explanation:
The solution is, there is no solution to the system.
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
Given the equation y=-2x+1
and given another equation y=mx+b in order for us to have no solution we must guarantee that both lines do not intersect.
Recall that m is the slope of the second equation and b the y-intercept. To guarantee that both lines don't intersect, they must be parallel.
To have this result, we must have that they have the same slope but different y intercept.
That is take m = -2 and b any value different to +1. For example, the b = 6.
So, y = -2x+6 = -2(x-3) is another equation that gives no solution to the system.
To learn more on equation click:
brainly.com/question/24169758
#SPJ7
Is this pair of triangles congruent if so what theorem applies to describe the series of rigid motions
Answer:
yes; The triangles are congruent by hypotenuse-angle congruence.
Step-by-step explanation:
Answer: yes Question 6
There is not enough information to determine congruency
Question 9
yes; The triangles are congruent by hypotenuse-leg congruence
Step-by-step explanation:
* Lets revise the cases of congruence
- SSS ⇒ 3 sides in the 1st Δ ≅ 3 sides in the 2nd Δ
- SAS ⇒ 2 sides and including angle in the 1st Δ ≅ 2 sides and
including angle in the 2nd Δ
- ASA ⇒ 2 angles and the side whose joining them in the 1st Δ
≅ 2 angles and the side whose joining them in the 2nd Δ
- AAS ⇒ 2 angles and one side in the first triangle ≅ 2 angles
and one side in the 2ndΔ
- HL ⇒ hypotenuse - leg of the first right angle triangle ≅ hypotenuse
- leg of the 2nd right angle Δ
- HA ⇒ hypotenuse - angle of the first right angle triangle ≅ hypotenuse
- angle of the 2nd right angle Δ
- LL ⇒ leg - leg of the first right angle triangle ≅ leg - leg of the
2nd right angle Δ
* Now lets solve the problem
# Question 6
- There are two right angle triangles
- They have two different legs
- There is no mention abut legs equal each other
- There is no mention about hypotenuses equal each other
- There is no mention about acute angels equal each other
∴ There is not enough information to determine congruency
# Question 9
- There are two right angle triangles
- Their hypotenuse is common
- There are two corresponding legs are equal
∵ The hypotenuse is a common in the two right triangles
∵ Two corresponding legs are equal
- By using hypotenuse-leg congruence
∴ yes; The triangles are congruent by hypotenuse-leg congruence
Step-by-step explanation:
Property 5
RHS Criterion for Congruence
Explaining the congruence of triangles using RHS Criterion of Congruence
RHS Criterion stands for Right Angle-Hypotenuse-Side Criterion.
Under this criterion, if the hypotenuse and side of one right-angled triangle are equal to the hypotenuse and the corresponding side of another right-angled triangle, the two triangles are congruent.
Important Notes
Two figures are congruent if they have the same shape and size.
Two angles are congruent if their measures are exactly the same.
Two triangles with equal corresponding angles may not be congruent to each other because one triangle might be an enlarged copy of the other. Hence, there is no AAA Criterion for Congruence.
Hope this helps have a nice day❤️
x cuanto hay q multiplicar 15 para q me de 100?
Answer:
no hay numero entero el cual te de el resultado
Step-by-step explanation:
pero podemos dividir para que te de un numero decimal,
dividamos 15/100, nos dará un resultado de un numero infinito el cual es 3.333+ así que como tal no hay algún número exacto para responder a esto
HELP ASAP!!!!
Select the correct answer.
What is the complete factorization of x2 - 6x + 9?
Answer:
(−3)2
Step-by-step explanation:
Answer: (x-3)2
Step-by-step explanation:
Determine all the transformations that have happened to f(x) = (x + 4)2 + 2 compared to
f(x) = x2
Answer:
Folow the steps to learn what transformations were determined.
Step-by-step explanation:
First we would have to graph the parent function which is f(x) = x^2. Start by finding your x and y values. Find the y values by plugging in the x values into the parent function.
X Y
2 4
1 1
0 0
-1 1
-2 4
Once these points are plotted you can start determining what are the transformations. Find the difference between the parent function and f(x) = (x + 4)^2 + 2 by looking below.
Vertical Shifts:
f(x) + c moves up,
f(x) - c moves down.
Horizontal Shifts:
f(x + c) moves left,
f(x - c) moves right.
The parent function has to be transformed left 4 and up 2. In order to do this shift each point from earlier left 4 and then up 2. In conclusion you will have two functions graphed (parent function and the transformed function).
2 power x+1 minus 2power X-2
Scarlett and Alyssa work at a dry cleaners ironing shirts. Scarlett can iron 15 shirts per hour, and Alyssa can iron 35 shirts per hour. How many total shirts would be ironed between the two workers if Scarlett worked 5 hours and Alyssa worked 10 hours on a given day? How many total shirts would be ironed between the two workers if Scarlett worked x hours and Alyssa worked y hours on a given day?
Answer:
25x + 35(2x) = 380
25x + 70x = 380
95x = 380 so
x = 4
then i think that mean it might be 8 then im not completly sure
T
What are the
D
What are the
coordinates of
point H' after
a 180 degree
clockwise
rotation
around the
origin?
H
Answer:
It is still - 5 cause it was rotated ao the original position so H does not change but T and D chane
The illustration models a shadow cast by a palm tree and the shadow of an individual at 5 o'clock each day. To the nearest tenth, how tall is the palm tree?
A) 6.3 ft
B) 7.5 ft
C) 8.2 ft
D) 10.5 ft
Answer:
8.2
Step-by-step explanation:
Took the usatestprep!
Answer:
8.2
Step-by-step explanation:
i took the test
Which value is less than the fraction 5/25? Convert to decimal and then compare. A. 0.025 B. 0.200 C. 0.25 D. 0.525
*Please help i dont know the answer.*