Answer:
a=1, b=3
Step-by-step explanation:
2a+3b=11---(1)
4a-5b=-11---(2)
(1)×2-(2): 4a+6b=22
-) 4a-5b=-11
------------------
11b=33
b=3
Put b=3 into (1), we have
2a+3(3)=11
2a=2
a=1
What is 10° equivalent to?
Answer: [tex]\frac{\pi}{18}[/tex]
Step-by-step explanation:
To convert from degree to radians, multiply by [tex]\frac{\pi}{180}[/tex], the conversion ratio.
Thus, 10 x [tex]\frac{\pi}{180}[/tex] = [tex]\frac{\pi}{18}[/tex]
A light bulb consumes 3600 watts-hours per day. How many watts-hours does it consume in 3 days and 6 hours?
Answer:
3 DAYS IS 10800 WATTS.
Step-by-step explanation:
3600 WATTS × 3 DAYS =10800 WATTS.
HELPP
ASAP I will mark brainist
Answer:
its C.7
Step-by-step explanation:
3^2 + 6^2 = 45
square root 45 and u get 6.7 round up and u get 7
The product of 18 and a
Answer:
the product of 18 are 1,2,3,6,9
Step-by-step explanation:
hope this helps
Given the function h(x)=-x^2-5x+14 determine the average rate of change of the function over the interval -9
Answer:
The average rate of change of the function over the interval is of 6.
Step-by-step explanation:
Average rate of change:
The average rate of change of a function h(x) over an interval [a,b] is given by:
[tex]A = \frac{h(b)-h(a)}{b-a}[/tex]
In this question:
Over the interval [-9,-2], so [tex]a = -9, b = -2, b - a = -2 -(-9) = 7[/tex]
The function is:
[tex]h(x) = -x^2 - 5x + 14[/tex]
[tex]h(-9) = -9^2 -5(-9) + 14 = -81 + 45 + 14 = -22[/tex]
[tex]h(-2) = -2^2 -5(-2) + 14 = -4 + 10 + 14 = 20[/tex]
Then
[tex]A = \frac{h(-2)-h(-9)}{7} = \frac{20-(-22)}{7} = \frac{42}{7} = 6[/tex]
The average rate of change of the function over the interval is of 6.
Please help. Thank you!
coat and a pair of boots are on sale
for 20% off.
The regular price of the coat is $250.
The regular price of the boots is $170.
Kayla wants to buy both the coat and
the boots. How much will she pay if she buys them during the sale?
Answer:
$336
Step-by-step explanation:
20% can be split into 2 10%
so to find 10% of a number U move the decimal point 1 place left
so 10% of 250 = 25, therefore 20% must equal
25 + 25 = 50. 20% of 250 is 50
and by doing the same this we find that 20% of 170 is 34
now minus the percentage from the original tO get the new price of both items
[tex]250 - 50 = 200[/tex]
[tex]170 - 34 = 136[/tex]
now add both 136 and 200 together to get the price she will pay for both on sale
[tex]200 + 136 = 336[/tex]
Solve 124m – 23=34 for m.
Answer:
0.45967741
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
m
=
57
124
Decimal Form:
m
=
0.45967741
…
This Histogram displays the prices in thousands of dollars of seven cars
currently on sale at a local dealership.
Which statement is true about this data?
a) the most expensive car on the lot costs exactly $60,000.
b) the median price is between $20,000 and $30,000.
c) there must be no mode in this data set
d) the prices of five cars must be less than the mean
Answer:
b
Step-by-step explanation:
The median price is between $20,000 and $30,000.
i got it right on the quiz :)
Answer:
B
Step-by-step explanation:
i did the test... a got it correct..
What does it mean when the result of solving a linear equation is x = 0?
a.
no solution
c.
the equation must be wrong
b.
zero is a valid solution
d.
like terms were not combined correctly
Please select the best answer from the choices provided
A
B
C
D
Answer:
a.no solution
Step-by-step explanation:
The solution x = 0 means that the value 0 satisfies the equation, so there is a solution. “No solution” means that there is no value, not even 0, which would satisfy the equation. ... If you substitute these values into the original equation, you'll see that they do not satisfy the equation
Succession is a gradual process within an ecosystem in which some species replace other species. When a volcano creates a brand new island of rock and then plants start to grow there is an example of ... Question 1 options: Ecological Succession Secondary Succession Micro succession Primary Succession
Answer:
Ecological Succession
When a volcano creates a brand new island of rock and then plants start to grow there is an example of ...
Primary Succession
Step-by-step explanation:
Ecological succession describes the ecological change in structure of a community of different species, or ecosystem. There are three main types of ecological succession. The first type is primary succession, followed by secondary succession, and then cyclic succession. Primary succession is the first formation of plants without soils with the presence of magma and water. Secondary succession takes place with the destruction of primary succession by fire, for example. Cyclic succession is the change of the ecosystem on a cyclic basis depending on time of the year.
Answer:
The answer would be secondary succession :)
Step-by-step explanation:
The area of the kite is 30 m2. What is the value of x? Explain
Answer:
x = 5
Step-by-step explanation:
Audrey tosses a coin and rolls a six sided die. Find the probability that the coin lands on heads and the die lands on an even number. All answers should be given as a fraction in simplest form!!
Any help would be appreciated, Thanks!
Answer:
p = 1/4
Step-by-step explanation:
probability that the coin lands on heads
p = 1/2
the die lands on an even number
p = 3/6 = 1/2
Both
p = 1/2 * 1/2
p = 1/4
Alice invests $5,000 at age 28 from the signing bonus of her new job. She hopes the investments will be worth $20,000 when she turns 40. If the interest compounds continuously, approximately what rate of growth will she need to achieve her goal?
Answer:4000 per year
Step-by-step explanation:
I have 3/4 of all my kittens and 3/4 of a kitten. How many kittens do I have?
Answer:
i think 6/8
Step-by-step explanation:
3/4 x 3/4
3/4 of all kittens and 3/4 of a kitten = 9/16 kittens
What is multiplication?Multiplication is the process of calculating the result when a number is taken times. The result of a multiplication is called the product of and, and each of the numbers and is called a factor of the product.
What are the rules of multiplication?Any number times zero is always zero.Any number times one is always the same number. Add a zero onto the original number when multiplying by 10.The order of factors does not affect the product.Products are always positive when multiplying numbers with the same signs.Learn more about multiplication here: https://brainly.com/question/10873737
#SPJ2
Solve for X
1/5 X + 1/2 = 1
Answer:
X = 5/2
Step-by-step explanation:
I will assume that you meant (1/5)X + 1/2 = 1. The LCD is 10.
Multiplying both sides by 10, we get:
2X + 5 = 10, or 2X = 5, or X = 5/2
The clerk at the grocery store makes $12 an hour. How much will be made in 40 hours?
Answer:480$
Step-by-step explanation:
Hope this helps
Answer:
480
Step-by-step explanation:
A prism has a pentagonal base. The
area of the pentagon is 45 cm2, the
height of the prism is 13 cm. Find the
volume of the prism.
Answer:
585[tex]cm^{3}[/tex]
Step-by-step explanation:
45 x 13 = 585
Let me explain...
we don't know the length and the width but it is telling us that there is an area of 45 centimeters. Meaning the Length x Width is equal to the area. so there wasn't no need to solve for length and width.
So that's why we only had to multiply the 45 (Length x width) and the height which is 13.
Final Answer: 585[tex]cm^{3}[/tex]
Which description best compares the graphs of these two functions?
Function A
y = -33 +2
2
Function B
0 2 4
2 1 0
6
-1
y
Functions A and B have the same y-intercept.
Functions A and B have the same x-intercept.
Function A is not a linear function.
Function B has a steeper slope.
Answer:
1st option, they have the same y-intercept
Step-by-step explanation:
they do not have the same x-intercept
'A' is linear
'B' has a less steep slope
The school canteen charges Rs 42 for lunch and Rs 8 for milk for
each day. How much money do you spend in 5 days on these things? Write proper steps. State the property used.
Answer:
After 5 days buying lunch and milk at the canteen school, Rs 250 will be spent.
Step-by-step explanation:
Given that the school canteen charges Rs 42 for lunch and Rs 8 for milk for each day, to determine how much money do you spend in 5 days on these things, the following calculation must be performed, using the distributive property:
(42 + 8) x 5 = X
50 x 5 = X
250 = X
Therefore, after 5 days buying lunch and milk at the canteen school, Rs 250 will be spent.
HI CAN SOME1 HELP ME WITH THIS! MATH :)
NO FAKE ANSWERS PLS! ^^ TY
Answer:
20
Step-by-step explanation:
multiply the sides
Hi ^^
------------------------------
Your answer is 24m³
-------------------------------
anyways bye! <3
Help me out please???
Answer:
62°
Step-by-step explanation:
What is the domain of y= tan(x)?
Answer:
Step-by-step explanation:
The domain of the function y=tan(x) ) is all real numbers except the values where cos(x) is equal to 0 , that is, the values π2+πn for all integers n . The range of the tangent function is all real numbers.
A middle school science teacher wants to conduct some experiments. There are 15 students in the class. The teacher selects the students randomly to work together in groups of five. a. In how many ways can the teacher combine five of the students for the first group if order is not important? (3 points) b. After the first group of five is selected, in how many ways can the teacher combine five of the remaining students if order is not important? (3 points)
Answer:
The answers are:
a. 3
b. 2 by 2
Please help :D!!!!! And explain
Plz help me well mark brainliest if correct ...??????????
Answer:
Median.
Step-by-step explanation:
The median is the value separating the higher half of a data sample, a population, or a probability distribution, from the lower half. In simple terms, it may be thought of as the "middle" value of a data set. For example, in the data set {1, 3, 3, 6, 7, 8, 9}, the median is 6, the fourth number in the sample. The median is a commonly used measure of the properties of a data set in statistics and probability theory.
WILL GIVE BRAINLIEST!!!!
Plot the image of quadrilateral ABCD under a reflection across line L.
Answer:
See image
Step-by-step explanation:
I clicked submit and it was right
Also dude I remember doing this and struggling before
The total length of a beach is 14.4 kilometers. If lifeguards are stationed every 0.06 kilometers, including one at the end of the beach, how many lifeguards will there be on the beach?
Answer:
240
Step-by-step explanation:
Divide 14.4 by 0.06, as the total distance is 14.4 kilometers and lifeguards are stationed every 0.06 kilometers.
a bakery sold 31 bagels in the first hour of business and 42 bagels in the second hour. if the baker had 246 bagels to start, how many bagels were left after the second hour?
Answer:
173 bagels were left after the second hour!!
Step-by-step explanation:
Lucy is on her way home in her car. She has driven 22 miles so far, which is one-half of the way home. What is the total length of her drive?
Answer:
44
Step-by-step explanation:
if 22 miles = 1/2
then, 22 times 2 = 44 miles
ANSWER= 44 miles
What is the function graphed below?
9514 1404 393
Answer:
B. y = x + 0.5
Step-by-step explanation:
The y-intercept of 0.5 eliminates choices A and C.
When x increases by 1, y increases by 1, eliminating choice D.
The equation of choice B is graphed.
y = x + 0.5