Answer:
x = 50, y = 20.
Step-by-step explanation:
x + y = 70
x - y = 30
From the second equation x = 30 + y, so substituting this in the first equation:
30 + y + y = 70
2y = 70 - 30 = 40
y = 20
and x - 20 = 30
so x = 50.
Answer:
20 , 50
Step-by-step explanation:
The sum of two numbers is 70 ⇒ x + y = 70 -------------(I)
x = 70 - y
Their difference 30 ⇒ x - y = 30 ----------(II)
Substitute x = 70 - y in equation (II)
70 - y - y = 30
Combine like terms
70 - 2y = 30
-2y = 30 - 70
-2y = -40
Divide both sides by (-2)
y = -40/-2
x = 20
Substitute the value of x in (I)
20 + y = 70
y = 70 - 20
y = 50
pls give the steps and the reasons
Answer:
m<ADB = m<DBC
because they're alternate interior angles.
m<ABD = m<BDC
because they're alternate interior angles.
DC = AB, opposite sides.
AD = BC, opposite sides.
m<ADB = m<ABD, adjacent angles.
m<BDC = m<DBC, adjacent angles.
What is..Simplify 15.8
Answer:
simplify of 15.8 is 16
Step-by-step explanation:
please mark me as brainliest
Answer:
15 4/5
Step-by-step explanation:
simplify simplify simplify
Answer:
here is the answer
Step-by-step explanation:
3x(5+4)=7
what dose that =
A,B & C form a triangle where BAC = 90°
AB = 11.9 mm and CA = 2.7 mm.
Find the length of BC, giving your answer rounded to 1 DP
Answer:
12.2
Step-by-step explanation:
BC = √ABsq + √CAsq
BC = √11.9sq + √2.7sq
BC = √141.6 + √7.3
BC = √148.9
BC = 12.2
Explain how you can use mental math to
calculate 2^8.
Answer:
think about what 2 times 8 equals
Step-by-step explanation:
Guys pls help me!!!!!
An airplane travels 2248 miles in 4 hours.
At this rate, how far could the airplane fly in 13 hours?
O 6656 miles
O 6981 miles
0 7306 miles
O I don't know.
Answer: the answer is 7306 miles in 13 hours
Step-by-step explanation: I just divided 2248 by 4 which is 562 then multiplied it by 13 which made it 7306. I took the quiz and got 100% hope this helps!
Jack’s recipe calls for One-half teaspoon of baking powder. He cannot find the One-half teaspoon measuring spoon. Instead, Jack uses the One-eighth teaspoon measuring spoon to add Three-eighths teaspoon of baking powder. Which statement is true? Jack should stop adding baking powder because One-eighth equals . Jack should add more baking powder because Three-eighths is less than One-half. Jack should add more baking powder because Five-eighths is less than One-half. Jack has added too much baking powder because is greater than .
Answer:
Jack should add more
Step-by-step explanation:
Because four eighth is half
And he only added 3/8
So when he adds 1/8 more the sum becomes 4/8
4/8=1/2
A Mars rover traveled from point A to point B at a speed of 4 cm/sec. Worsening conditions during the return trip caused the rover to travel at a speed of 2.5 cm/sec, and increased travel time by 15 minutes. What is the distance between point A and point B?
Using the speed - time relation, the distance between point A and B is 6000 cm
Recall :
Distance = speed × time Time = distance / speedLet ; the time taken = t ; distance = d
To trip :
d = 4t ----(1)Fro trip :
t is in seconds ; 15 minutes = (15×60) = 900 secondsd = 2.5(t + 900)
d = 2.5t + 2250 - - - - - (2)
Equating (1) and (2)
4t = 2.5t + 2250
Collect like terms
4t - 2.5t = 2250
1.5t = 2250
t = 2250 / 1.5
t = 1500 seconds
Hence, distance = 4(t) = 4(1500) = 6000 cm
Therefore, the distance between the points is 6000 cm
Learn more : https://brainly.com/question/25203683
I forgot how to do this. Please help!
Answer:
It's just a line with a slope of 0 at y= -5
HELP PLEASE solve for d
d= 1- 4bh
Step-by-step explanation:
- 8b = 2d - 2/h
Multiply both sides of the equation by h.
- 8bh = 2d - 2
Swap sides so that all variable terms are on the left-hand side.
2d - 2 = - 8bh
Add 2 to both sides.
2d = - 8bh + 2
The equation is in standard form.
2d = 2 - 8bh
Divide both sides by 2.
2d/2 = 2 - 8bh/2
Dividing by 2 undoes the multiplication by 2.
d = 2 - 8bh/2
Divide -8bh + 2 by 2.
Therefore: d = 1 - 4bh
this is just so dum why do they make the app if nobody is going to help me and other some people have to post the same question 5 times even more if they have their people in need that need help and they come on brainly so they can get help even I do but yall dont care yall answer that yall want to answer thats not fair
What question do you need help with
what is perfect cube
Answer:
The perfect cube is the result of multiplying the same integer three times. Multiplying the number 4 three times, for example, yields 64. As a result, the number 64 is a perfect cube. Perfect cube = number x number x number.
Step-by-step explanation:
Perfect cube numbers can be obtained by multiplying every number thrice by itself. For example, 1 × 1 × 1 = 1 and 2 × 2 × 2 = 8 and so on. The list of perfect cubes from 1 to 10 is as follows: 1, 8, 27, 64, 125, 216, 343, 512, 729, and 1000.
Answer Here
Why is 0.0123 x 107
not in the correct Scientific
Notation format?
becauseStep-by-step explanation:
Explain why the triangle are similar. Then find the distance represented by x
Answer:
I think its the rule RHS or SAS that indicates that x is 180ft (scale factor of 1.5)
Step-by-step explanation:
first do 135/90 to find the scale factor of 1.5
then to find x, multiply 120 by the scale factor.
10. If you can travel 97 miles in 30 minutes, how many mileScan you
travel at the same rate in 8 hours?
Can someone pls help meee
_________
[tex] \: [/tex]
[tex] \triangle \sf \: abc = \triangle \sf \: xyz[/tex]
Soo :
Ab = Xy Bc = Yz Ca = ZxTriangle in the picture.
corrine has 9.6 pounds of trail mix to divide into 12 bags. how many pounds of trail mix will go in each?
Answer:
0.8 pounds
Step-by-step explanation:
Divide 9.6 pounds by 12 bags = 0.8 pound per bag
Answer:
0.8 lbs per bag
Step-by-step explanation:
9.6 / 12 = 0.8
Answer: 0.8
brainlest if you answer right.
A group of people were asked if they had run a red light in the last year. 385 responded "yes", and 472 responded "no".
Find the probability that if a person is chosen at random, they have run a red light in the last year.
Give your answer as a fraction or decimal accurate to at least 3 decimal places
hurry plssssss
Answer:
44.9%
Step-by-step explanation:
you can find the probability by dividing the total number of people by the number of people who have run a red light:
385/857
simplify into a decimal:
0.449
convert into a percent to get your answer:
44.9%
I really need help with this question :)
Answer:
here you go.
Step-by-step explanation:
The diagonal is the hypotenuse of a rectangular triangle.
So:
d2=l2+w2
132=169=(x+7)2+x2=x2+14x+49+x2→
2x2+14x−120=0→x2+7x−60=0
A simple quadratic equation resolving into:
(x+12)(x−5)=0→x=−12orx=5
Only the positive solution is useable so:
w=5andl=12
Help me please this is due please help
Answer:
18
Step-by-step explanation:
Divide the total weight of dough by the amount required for 1 pizza
20 [tex]\frac{1}{4}[/tex] ÷ 1 [tex]\frac{1}{8}[/tex] ( change mixed numbers to improper fractions )
= [tex]\frac{81}{4}[/tex] ÷ [tex]\frac{9}{8}[/tex]
• leave first fraction , change ÷ to × , turn second fraction ' upside down '
= [tex]\frac{81}{4}[/tex] × [tex]\frac{8}{9}[/tex] ( cancel 81 and 9 by 9 )
= [tex]\frac{9}{4}[/tex] × 8 ( cancel 4 and 8 by 4 )
= 9 × 2
= 18 pizza's
Directions: Convert the equations from standard form to slope intercept form.
Answer:
Write in slope-intercept form, [tex]y=mx+b[/tex].
5. [tex]y=2x+7[/tex]
6. [tex]y=-\frac{5}{3} x+4[/tex]
7. [tex]y=x-1[/tex]
8. [tex]y=\frac{1}{3}x +5[/tex]
9. [tex]y=\frac{4}{5}x -2[/tex]
10. [tex]y=-\frac{7}{3}x + 6[/tex]
2 sss, aas, sas, or not enough information
Answer:
ASA
Step-by-step explanation:
there is one more angle, which is the vertical opposite.
In each triangle below, name the type of line segment that CD is.
WILL GIVE BRAINLIEST. a. determine a rule for the table B. complete the table. for input for 4 and n.
Answer:
WHAT TYPE OF MATH LIKE WHAT LESSON
Step-by-step explanation:
Best answer gets brainliest!
Whats the question to my answer?
Answer: pickle
Whats the question?
(u can make up what the question is theres no real answer)
Answer:
If I give you a nickel, what am I wanting you to tickle? my ____
Step-by-step explanation:
Solve for x
See picture for problem! Please and thank you!!
Answer:
x = 10°
Step-by-step explanation:
m∠DCR is an exterior angle of the triangle DCE
Solving For Exterior Angles:To find the value of an exterior angle, we must sum up the two opposite (corresponding) angles inside the triangle
In this case, 2x + 7 and 26 are the corresponding angles
Solve:6x - 7 = 2x + 7 + 26
4x - 7 = 7 + 26
4x = 14 + 26
4x = 40
x = 10°
Your answer : x = 10°-Chetan K
If the second quantity in a rate is not 1, how do you find the unit rate?
Answer:
If you have a rate, such as price per some number of items, and the quantity in the denominator is not 1, you can calculate unit rate or price per unit by completing the division operation: numerator divided by denominator.