Crystal said she used the distributive property to evaluate 5(4 + 7). These are the steps she took:5(4 + 7) = 5⋅4 + 7 = 20 + 7 = 27
What mistake did Crystal make? What is the correct answer to 5(4 + 7)?
Type a paragraph
Answers
The value of 5(4 + 7) is 55.
It is required to find the correct answer.
What is simplification?
Simplification means simplifying processes involved in work towards consistency of efforts, costs and time. It eliminates useless and disadvantageous (or unnecessary) diversity and variety.
Given that:
By the Distributive Property
If a, b, c are real numbers, then
a*(b+c)=a*b+a*c
Crystal's did mistake was that she distributed the 5 only to the 4, not to the 5 to 7 as well.
First distribute and then multiply, we get
The correct step should have been
= 5(4 + 7)
= 5⋅4 + 5⋅7.
= 20 + 35.
= 55
Therefore, the value of 5(4 + 7) is 55.
Learn more about simplification here:
#SPJ5
Answer:
Crystal's mistake was that she distributed the 5 only to the 4, not to the 7 as well.
The correct step should have been 5(4 + 7) = 5⋅4 + 5⋅7.
Using the distributive property correctly would give the sum of the two products, 20 + 35. The value of 5(4 + 7) is 55.
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63 mg
6.3 g
0.63 kg
Answers
Answer: 6.3 g
Step-by-step explanation:
First, we need to put every mesure into the same unit. Let's put all into grams.
- kg would be too heavy for a quarter (consider that we use kg to weight people, for example)
- mg is too light (consider that we use mg to weight pills, for example)
We know that
1 kg = 1000 g
1 g = 1000 mg
630 g = 630 g
63 mg = 63/1000 = 0.063 g
6.3 g = 6.3 g
0.63 kg = 0.63*1000 = 630 g
The most suitable answer for a quarter is 6.3g, because 630 g would be too heavy and 0.063 g would be too light.
Answers
4x² - 11x - 3 = 0
4x² -12x + x - 3 = 0
4x (x - 3) + 1(x - 3) = 0
(x - 3) (4x + 1) = 0
Using zero product property,
Either,
x - 3 = 0
x = 3
Or,
4x + 1 = 0
4x = -1
x = -1/4
(4x+1)(x-3)=0
We can solve for x by setting each parentheses equal to 0
x= -1/4
x= 3
b. defaulting
c. maximizing profit
d. zeroing
2. APR stands for
a. annual partial
b. amortized percentage rate
c. annual percentage rate
d. amortized partial rate
3. when calculating interest accrued, you should
a. multiply the principal by APR
b. multiply the principal by the APR and number of months
c. multiply the principal by the APR and number of months, then divide by the total number of the months in the year
d. multiply the principal by the APR and the number of months in the year, then divide by the
4. --- are used to take money directly from your account
a. Charge cards
b. Debit cards
c. Credit cards
d. Cash cards
5. A pack of gum would be considered a
a. luxury item
b. small ticket item
c. unaccountable expense
d. necessity
6. Interest rates on mortgages are lower because the home is
a. used
b. secured
c. collateral
d. stable
Answers
a. paying it off
2. APR stands for
c. annual percentage rate
3. when calculating interest accrued, you should
c. multiply the principal by the APR and number of months, then divide by the total number of the months in the year.
4. --- are used to take money directly from your account
b. Debit cards
5. A pack of gum would be considered a
b. small ticket item
6. Interest rates on mortgages are lower because the home is
b. secured
Answer and Explanation
1.When you pay a bill in full, you are
Paying it off - When you pay off a bill it means that you give money to in return for goods or services rendered. That is giving cash for exchange of goods or services.
2.APR stands for
Annual percentage rate- This is the annualized cost of credit expressed as percentage.The calculation of APR considers certain fees to reflect the cost of credit in addition to interest.
3.when calculating interest accrued, you should
multiply the principal by the APR and number of months, then divide by the total number of the months in the year.
4. --- are used to take money directly from your account
Debit cards- A debit card is a payment card that is used to make payment instead of using cash to make payments when purchasing items.
5. A pack of gum would be considered a
small ticket item-a small ticket item is a retail good that has low selling price.
6.Interest rates on mortgages are lower because the home is
Secured- Secured loan interest lowers the risk for the leader and allows the lender to charge lower interest. In this transaction in which a security interest is granted is called a secured transaction.
Answers
Answers
this gets you
(5^4)/(5^2) which you can then subtract the exponents since the base is the same, and 4-2=2
Answers
2 can not be expanted and then you muliply either 2 and 2 or 2 and 80 which ever you do you have to had what number you didnt use into the problem