Answer:
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.
Step-by-step explanation:
Answer:
You must substitute a number for each variable and carry out the arithmetic operations in order to evaluate an algebraic expression.
Step-by-step explanation:
To determine the value of a variable expression: Replace the values for the variables in step 1.
2. List the grouping symbols, starting with the symbols closest to the center.
3. Determine the exponentiation rules and use them to simplify.
4. Evaluate. Use x to evaluate the expression.
Please Help!
Topic: Indices with algebraic expressions
Answer:
7/4x squared
that's the answer to your question
Answer:
Step-by-step explanation:
7x^4\2
Please hurry will give braliny
Hello,
[tex]( {c}^{2} + {d}^{2} ) - 2( {c}^{2} - {d}^{2} )[/tex]
[tex] = (( - 2) {}^{2} + 2 {}^{2} ) - 2(( - 2) {}^{2} - 2 {}^{2} )[/tex]
[tex] = (4 + 4) - 2(4 - 4)[/tex]
[tex] = 8 - 2 \times 0[/tex]
[tex] = 8[/tex]
Answer:
d or 16
Step-by-step explanation:
(-2²+2²)-2(-2²-2²)
-2(-4-4)
8+8=16
Marsha reads for 3 hours each day. There are 24 hours a day. What decimal represents the part of each day that Tyler spends reading?
Answer:0.125
Step-by-step explanation:
HELP
Jack wants to model a situation where the perimeter of the rectangle below is 6 ft plus or minus 1.5 ft.
Answer:
Step-by-step explanation:
The perimeter of the rectangle is given as:
The perimeter of a rectangle is:
So, we have:
Substitute values for length and width
Split
or
or
Divide both sides by 2
or
Solve for x
or
or
Both values of x are negative.
This means that; the absolute value model cannot work, because a rectangle cannot have a negative dimension.
Hence, option (c) is correct.
Read more about perimeters at:
brainly.com/question/6465134
Which of the following does not have a difference of 4?
9 - 5
-5 - (-9)
-4 - (-8)
-8 - (-4)
Answer: D -8 - (-4)
Step-by-step explanation:
in November, MS Calistro's students read 20 books in December they read 16 books. What is the percent increase or decrease of books they read
Answer:
20 percent decrease
Step-by-step explanation:
What function is graphed below?
y = 4 x + 2
y = x + 2
y = 2 x + 2
y = 2 x
sorry to ask but i need help
(-2)³x(-6)
Answer:
48
Step-by-step explanation:
-2×-2×-2= -8
-8×-6= 48
negative × negative = positive
Answer:
The answer is 48
Step-by-step explanation:
What possible transforms are shown below?
A reflection in the y-axis
A translation 4 units to the left
A rotation of 90°
A reflection in the x-axis
(multiple select)
Answer:
A reflection in the y axis
Step-by-step explanation:
if you count the spaces over the y axis you can tell that it is reflected
Answer:
B,C,D
Step-by-step explanation:
Find the value of x for a line that has a slope of -3/5 and goes through the points (x,-2) and (-7,4)
Answer:
x = 3
Step-by-step explanation:
Please hurry will give braliny
Answer: D
Step-by-step explanation:
Follow the PEMDAS rule.
It’s not A, because when you solve 2^2 and sq rt of 4, the square exponent and the square root cancels out, so it’s simply 2 x 4. Then you follow by doing division and multiplication, 45/5 is 9 and 2 x 4 is 8, so 9+8=17.
It’s not B, because first solve the numbers in the parentheses. 2^2 is 4, 5+4 is 9. Then solve the square root of 4 which is 2, and you get 45/9x2, which is 10.
It’s not C because 2^2 is 4 and sq rt of 4 is 2, and 4-2 is 2. Then divide 45 by 5 to get 9, and 9+2 is 11.
The correct answer is D, because when you solve 2^2 which gives you 4 and add that to 5, you get 9. The sq rt of 4 is 2, so you get 45/9-2, which is 3.
Hope this helps!
Referring to the figure, Paula is cooking Italian food and using
the pan shown that is 22 cm long, 19 cm wide, and 2 cm deep. Which is
the capacity of the pan in milliliters and in liters?
a. 836; 8.36 c. 836; 0.836
b. 43; 0.043 d. 43; 0.43
Answer:
22*19*2=836cm cube=836ml
836ml=0.836l
answer is a
Which expression represents the sequence of operations described below?
subtract 4 from 8, then multiply the result by 5
Answer:
(8-4)×5
Step-by-step explanation:
expression is as above
Answer:
(8-4) • 5 = 20
Step-by-step explanation:
first you solve what is in the parentheses;
8-4 which = 4
then you multiply 4 by 5 which is 20
Divide the following integers.
-12 � 4=
-8
-3
-48
3
Answer:
3
Step-by-step explanation:
a begative divided by a positive is a negative and 12/4 is 3 so it becomes -3
Answer:
-3
Step-by-step explanation:
Help please. Screenshot if below:
The table shows the changes in the times (in seconds) of four teammates. What is the mean change? Write your answer as a decimal. {picture}
The mean change is _____second(s).
Answer: - 1.28
Hope this help you and or any other person that needs this :)
Step-by-step explanation:
Use the fact that 13x17=221 to find the following and explain how you found each solution
13 × 1.7
130 x 17
13 x 1700
I do not understand what it wants me to do please help
Answer:
13 × 1.7
130 × 17
13 × 1700
13 × 17× 100
221 × 100
22100
So the answer is 22100
What inequality is graphed below?
Answer:
x is less than or equal to 1.5
(less than sign with a bar below it)
Please hurry will give braliny
[tex] \bf \implies {7}^{2} - 8 \times 2 - 16[/tex]
Step-by-step explanation:A) (7² - 8)(2) -16[tex]\bf \longrightarrow(7^{2} - 8)(2)- 16[/tex]
[tex]\bf \longrightarrow(49 - 8)(2) - 16[/tex]
[tex]\bf \longrightarrow(41)(2) - 16[/tex]
[tex]\bf \longrightarrow82 - 16[/tex]
[tex]\bf \longrightarrow66[/tex]
B) 7² - 8(2 - 16)[tex]\bf \longrightarrow {7}^{2} - 8(2 - 16)[/tex]
[tex]\bf \longrightarrow49 - 8(2 - 16)[/tex]
[tex]\bf \longrightarrow49 - (8)( - 14)[/tex]
[tex]\bf \longrightarrow49 - ( - 112)[/tex]
[tex]\bf \longrightarrow161[/tex]
C) 7² - ((8)(2)-16)[tex]\bf \longrightarrow {7}^{2} - ((8)(2) - 16)[/tex]
[tex]\bf \longrightarrow49 - ((8)(2) - 16)[/tex]
[tex]\bf \longrightarrow49 - (16 - 16)[/tex]
[tex]\bf \longrightarrow49 - 0[/tex]
[tex]\bf \longrightarrow49[/tex]
D) 7² - (8)(2) - 16[tex]\bf \longrightarrow {7}^{2} - (8)(2) - 16[/tex]
[tex]\bf \longrightarrow49 - (8)(2) - 16[/tex]
[tex]\bf \longrightarrow49 - 16 - 16[/tex]
[tex]\bf \longrightarrow49 - 32[/tex]
[tex]\bf \longrightarrow17[/tex]
Thus, Option A , Option B and Option C don't expressed the value of 17.
Therefore, The correct option is D) which expressed the value of 17.
Did I do it right? Grade 7 math
Answer:
You have all the right answer except for the last one it should be 20 not 22
Step-by-step explanation:
Here's way she is buying two candles which is $12 then to rush it it is an extra $8 adding them together you get only $20.
Referring to the Fig. in Question #34, find the product represented by the
shaded region.
a. 1 c. 11/16
b. 4/3 d. 3/4
I really need help please
PLS HELP ME!!!! THIS IS DUE TOMORROW!!! v - 1/2 = -9/8
What is v?
Answer: v=-5/8
Step-by-step explanation:
v - 1/2 = -9/8
(v - 1/2 = -9/8)*8 ==> multiply the equation by 8 to get rid of fractions
8v - 8*1/2 = -9
8v-8/2=-9
8v-4=-9
8v=-5
v=-5/8
Answer: v=-5/8
Step-by-step explanation:
I think I’m in your class. My class went over the answers the day before.
b - 7/4 = -2/3
WHAT IS B!!!!!!!!
Answer:
b = 13/12
Step-by-step explanation:
[tex]b-\frac{7}{4} =-\frac{2}{3} \\\\\\b=-\frac{2}{3} + \frac{7}{4} \\\\\\b =-\frac{8}{12} + \frac{21}{12}\\ \\\\b=\frac{13}{12} \\[/tex]
What is 40% of 48.2 km
Answer:
19.28 kilometers
Step-by-step explanation:
40 percent *48.2
= (40/100)*48.2
= (40*48.2)/100
= 1928/100 = 19.28
Now we have: 40 percent of 48.2 = 19.28
Question: What is 40 percent of 48.2?
We need to determine 40% of 48.2 now and the procedure explaining it as such
Step 1: In the given case Output Value is 48.2.
Step 2: Let us consider the unknown value as x.
Step 3: Consider the output value of 48.2 = 100%.
Step 4: In the Same way, x = 40%.
Step 5: On dividing the pair of simple equations we got the equation as under
48.2 = 100% (1).
x = 40% (2).
(48.2%)/(x%) = 100/40
Step 6: Reciprocal of both the sides results in the following equation
x%/48.2% = 40/100
Step 7: Simplifying the above obtained equation further will tell what is 40% of 48.2
x = 19.28%
Therefore, 40% of 48.2 is 19.28
can you please help me
Referring to the figure, the circle shown is drawn on grids. Find
A ÷ r and A ÷ r2.
a. 5.4, 3 c. 10.3, 2.9
b. 12.6, 4.2 d. 10.9, 3.1
Answer:
a
Step-by-step explanation:
Find 3 consecutive odd integers such that the sum of 2 times the first and the last term is equal to 5 times the middle integer.
Answer: 10
Step-by-step explanation:
The zoo is hosting a special evening event for visitors ages 12 and up. During the event, the price of popcorn is reduced from $3 per bag to $2 per bag. If 843 bags of popcorn were sold during the event, which integer expresses the total amount of money the zoo lost by reducing the price?
−$843
−$1
−$2
Answer: -$843
Step-by-step explanation:
843 x 3 = $2529
843 x 2 = $1686
2529 - 1686 = $843
The zoo makes $2529 on a regular night, but because there is a discount, they make $1686. The amount of money is the difference between the two totals. Therefore, the total amount of money the zoo lost by reducing the price is $843.
Lilly starts hiking along a trail at 3 miles per hour. Dave starts hiking the same trail from the same starting point at 3.5 miles per hour. If Lilly walked 2 miles before Dave started hiking, would he catch up to her?
I just need the equation.
Answer:
it should be 7
Step-by-step explanation:
because if they walk a total of 3 miles and lily walks 2 mile before David that would be 3.5 times 2 which is 7
Answer: yes
Step-by-step explanation:
Will give 20 points to whoever answers
Answer: I hope this helps.
Step-by-step explanation: