the answer is 6 she can buy 6sandwiches
10. Estimate and solve: 3.2 x 6
Answer:
the answer is 19.2 estimate: 18 because 3 x 6 is 18
An Eastbound train (E) traveling 95 mph and a Westbound train (W) traveling 110 mph leave the same train station at different times. After 4 hours, they are 4 00 miles apart. Which system of linear equations can be used to determine the time that each of the trains has been traveling?
Answer:
The system of linear equations that can be used to determine the time that each of the trains has been traveling is:
E + W = 4 ....... Equation 1
95 E + 110W = 400 ......Equation 2
Hence,
An Eastbound train has been travelling for = (E) = 2.67 hours
A Westbound train has been travelling for = (W) = 1.33 hours
Step-by-step explanation:
An Eastbound train (E) traveling 95 mph and a Westbound train (W) traveling 110 mph leave the same train station at different times. After 4 hours, they are 4 00 miles apart. Which system of linear equations can be used to determine the time that each of the trains has been traveling?
Speed = Distance/Time
Distance = Speed × Time
Let the time
An Eastbound train = (E)
A Westbound train = (W)
E + W = 4 hours ....... Equation 1
95mph × E + 110mph × W = 400 miles
95 E + 110W = 400 miles ......Equation 2
The system of linear equations that can be used to determine the time that each of the trains has been traveling is:
E + W = 4 ....... Equation 1
95 E + 110W = 400 ......Equation 2
E = 4 - W
We substitute 4 - W for E in Equation 2
95 (4 - W) + 110W = 400
380 - 95W + 110W = 400
Collect like terms
95W - 110W = 400 - 380
15W = 20
W = 20/15
W = 1.3333333333 hours
≈ 1.33 hours
E = 4 - W
E = 4 - 1.33 hours
E = 2.67 hours
Therefore,
An Eastbound train has been travelling for = (E) = 2.67 hours
A Westbound train has been travelling for = (W) = 1.33 hours
i need help with this one pleaseeeeeee (first will get brainliest)
Answer:
y = x + 15
Step-by-step explanation:
I tried all of them but that one works. U can try it on each number. Brainliest plz! Hope this helps!
Answer:
Y=2x is the answer
Step-by-step explanation:
Which of the following represents the symmetric property of equality?
Question 5 options:
A)
If a = b and b = c, then a = c
B)
If a = b, then ac = bc
C)
a(b + c) = ab + ac
D)
If a = b, then b = a
Answer:
D. if a=b, then b = a
The symmetric property of equality is If a = b, then b = a. The correct answer is D.
What is symmetric property?According to the symmetric property, if x=y, then y=x is true for all real numbers x and y.
Given the relation of "equality" (=),
and a = b;
if b = a is true for all a and b, then equality is said to be symmetric.
The claim applies to all of a and b. (no counterexample can be found). The symmetric property of equality refers to this.
Example - If x + y = 3, then 3 = x + y.
Therefore, If a = b, then b = a is the correct answer.
To learn more about the symmetric property;
https://brainly.com/question/29206759
#SPJ2
The graph shows the probability of cardiovascular disease by age and gender
Answer:
Can you add a screenshot or better quality image so I can answer
Step-by-step explanation:
-6+(-2)+14
i want the explanation
Answer:
6
Step-by-step explanation:
-6+-2 is -8. if you add 14 its 6
is f(x)=7-2x a polynomial function
Answer:
Yes
Step-by-step explanation:
'
Yes, this F(x) is a polynomial function involving the first and null integer powers of x: x^0 and x^1.
Witch of the following cannot be the lengths of the sides of a triangle ?
Answer:
Are there any options??
At Chester’s Bakery, a box of 12 donuts sells for $8.50. What is the unit price of the donuts in the box, rounded to the nearest cent?
$0.12 per donut
$0.71 per donut
$1.02 per donut
$1.41 per donut
Answer: $0.71
Step-by-step explanation:
Elliot collects miniature toy cars. He wants to fill 4 display cases.each display case holds 15 cars. He has 28 cars now, and he is able to buy 3 more every month with the money he saves from his allowance. How many more months will it be until elliot has enough cars to fill all 4 display cases?
Answer:
Elliot has to wait 11 months before he has enough cars
Step-by-step explanation:
Elliot has 4 display cases with each case being able to hold 15 cars. Thus we know
total # of cars Elliot can place in his display case = 4 * 15 = 60 cars
From this, we can figure out how many more cars Elliot needs by subtracting the amount of cars he already has
# of cars Elliot needs = 60 - 28 = 32 cars
Now to find the number of months Elliot needs, we divide by how many he can buy each month
# of months Elliot needs to save up for = 32 / 3 = 10 2/3
Assuming Elliot does not get his allowance until the end of the month, we will have to round the number of months up to the nearest integer, 11
-2m-6=-6m+8
Somsome pls help , step by step
Answer:
m= 3.5
Step-by-step explanation:
-2m- 6=-6+ 8m - Starting on the left side, Add 6 to both sides, to get a new equation of;
-2m = -6m +14 - Then, starting on the right now, add 6m to both sides, to get a new equation of;
4m = 14 - Then divide both sides by 4, to get your final answer of;
m = 3.5
-2m-6=-6m+8
someone pls help me and solve the problem showing there work!
Answer:
Hope this helps you understand
Step-by-step explanation:
-2m-6=-6m+8
Add 6 on both sides
-2m=-6m+14
subtract 14 from both sides.
-2m -14=-6m
Add 2m on both sides
-14=-6m
Do the rest on your own
279 is 33 1/2 of what amount
Answer:
33% of 279 is equivalent to multiplying them: 33% × 279.
Step-by-step explanation:
Ask questions slove for x 5(x-3)=15
Answer:
Step-by-step explanation:
Your answer is 6
Plzzzz help The variables p, q, and r are rational numbers with the following properties:
p>0, q<0, and r < 0.
Based upon the given information, select the option below where both expressions have a negative value.
A Op.p and s.r
B O qr and pa
C O qr and 7pr
D O pq and 7pr
Answer:
qr and pq
Step-by-step explanation:
9 × [(21 − 4) − 9 what is the answer when you find out pls let me know!!!
Answer:
72 is the answer
21-4 IS 17, AND 17 - 9 IS 8, THEN 9X8 IS 72.
Outline at least 4 methods of solving linear systems.
The four steps for solving linear systems are;
Graphical methodBy substitution methodBy elimination methodBy augmented matrixSolving linear systemsA variety of ways for solving linear systems exist which include;
Graphical method by seeking the point of intersection.Substitution method involving making a variable the subject of the formula and substituting accordingly.Elimination involves manipulation to get rid of a variable by means of subtraction or addition.Augmented matrices are used to solve linear systems.Read more on solving linear systems;
https://brainly.com/question/384631
Answer:
graphing
algebraic methods
using inverse matrices
transforming an augmented matrix to reduced row echelon form
Cramer’s rule
Step-by-step explanation:
How far will 25 N of force stretch a spring with a spring with a spring constant of 125 N/m?
Answer:
-0.656168ft
Step-by-step explanation:
If Spring force constant (k) is 125 N/m
And the force is (F) 25 N ,
then the spring displacement (Δx) -0.656168
Equation used:
Knowing Hooke's law, we can write it down it the form of a formula:
F = -kΔx
F is the spring force (in N);
k is the spring constant (in N/m); and
Δx is the displacement (positive for elongation and negative for compression, in m).
Divide 18 by j. Then, add 7.
Which of the following expressions matches the statement above?
A.
j ÷ 18 + 7
B.
18 ÷ 7 + j
C.
18 ÷ (j + 7)
D.
18 ÷ j + 7
How to tell if your table is linear or exponential?
Answer: If the first difference is the same value, the model will be linear. If the second difference is the same value, the model will be quadratic. If the number of times the difference has been taken before finding repeated values exceeds five, the model may be exponential or some other special equation.
Step-by-step explanation: You can tell if a table is linear by looking at how X and Y change. If, as X increases by 1, Y increases by a constant rate, then a table is linear. You can find the constant rate by finding the first difference. This table is linear.
68 lb 13oz - 30 lb 15 oz=
Answer:
37.875 lb (37 lb 14 oz)
Step-by-step explanation:
(There are 16 oz in 1 lb)
68 lb = (68 x 16 =) 1,088 oz
1,088 oz + 13 oz = 1,101 oz
30 lb = (30 x 16 =) 480 oz
480 oz + 15 oz = 495 oz
1,101 oz - 495 oz = 606 oz = (606 oz ÷ 16 =) 37.875 lb
Final answer:
37.875 lb (37 lb 14 oz)
Hopefully this helps! Sorry if wrong. You are loved and you are beautiful/handsome!
-Bee
Answer please :) I honestly don’t know and confused
68
I think, unless if it is multiplied =48
Answer:
48
Step-by-step explanation:
the h value is 8, so multiply 6 and 8,
for future reference, is there is no symbol in the middle, then you always multiply it
3/4 minus 7/16. In factions
Answer:
What is the question sir
Step-by-step explanation:
Raina, Alan, and Kareem have a total of $85 in their wallets. Kareem has $9 less than Raina. Alan has 2 times what Kareem has. How
much do they have in their wallets?
Amount in Raina's wallet
$
Amount in Alan's wallet:
$
Amount in Kareem's wallet:
$
Answer:
17, 51, 24.
Step-by-step explanation:
i cant type it rn but i will put it in comments later :D hope this helped!
Katana has a shelf that is 5 feet long.She wants to paint a design along 7/10 of the shelf. How many feet of the shelf will katana paint a design
Answer:
7.14285714286
Step-by-step explanation:
you basiclly just divide 5 by 7/10 or 5/1 divided by 7/10
if Ad = 2x + 2 and cd= x +11, what is the value of x
Answer: the answer is 9
Step-by-step explanation:
List the possible rational roots and actual rational roots for the equation ,' - 5x?+ 9x2 - 7x + 2 = 0. a. +1, +2; -1, -2 +1, +3; 1, 2, 3 b. +1, +2; 1, 2 d. +1, +2; 1,6 Please select the best answer from the choices provided Ο Α OB C D
Answer:
C
Step-by-step explanation:
identiy why trade improved during the middleages.
this is the question.
Answer:
intermarriage
Step-by-step explanation:
people from different part intermarried
Answer:
dont know
Step-by-step explanation:
A gallon of water weighs 8.3 pounds. Simon uses 11.81 gallons of water while taking a shower. How many pounds of water did Simon use?
Answer:
98.023 lbs
Step-by-step explanation:
8.3 x 11.81 = 98.023
What is the perimeter of an equilateral triangle which has an area of 96\sqrt{3}96
3
Answer:b
Step-by-step explanation: