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Juliette [100K]
3 years ago
6

What is the value of 6 + 3 • 2² + 6 - 3 • 4?A. 12B. 24C. 36D. 48​

Mathematics
2 answers:
Greeley [361]3 years ago
7 0

Answer:

A. 12

Step-by-step explanation:

pshichka [43]3 years ago
7 0

Answer:

A.12

Step-by-step explanation:

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Find b and then solve the equation: 2x^2+bx−10=0, if one of its roots is 5
slavikrds [6]

Vietas formula tells us that the product of our two roots is equal to the constant term of a quadratic over the leading coefficient, so:

[tex] r_1r_2=-\frac{-10}{2} \implies 5*r_1=-5 \implies r_1=-1[\tex]

It also tells us that the b term in our quadratic is equal to the negative of the sum of the terms divided by the leading coefficient, so:

[tex] r_1+r_2=-\frac{b}{2} \implies 4=-\frac{b}{2} \implies b=-8 [\tex]

So, one of our roots is 5, the other is -1, and our b value is 8.

4 0
3 years ago
Read 2 more answers
A water tank holds 621 gallons but is leaking at a rate of 4 gallons per week. A second water tank holds 828 gallons but is leak
hram777 [196]

Answer:

69 weeks

Step-by-step explanation:

Let the number of weeks be x.

The first tank holds 621 gallons is leaking at a rate of 4 gallons per week. This means that after x weeks, the amount of water in the tank is:

621 - 4x

The second tank holds 828 gallons is leaking at a rate of 7 gallons per week. This means that after x weeks, the amount of water in the tank is:

828 - 7x

After a certain amount of weeks, the amount of water in both tanks is the same. That means that:

621 - 4x = 828 - 7x

=> 7x - 4x = 828 - 621

3x = 207

x = 207 / 3 = 69

This means that the amount of water in the tank will be the same after 69 weeks.

8 0
4 years ago
The cost of a car rental is 30​$ per day plus 27 cents per mile. You are on a daily budget of 76 ​$. Write and solve an inequali
denis-greek [22]

Answer:

okok so the answer is

Step-by-step explanation:

45.55+30=74.55

0.27 * 168=45.36

45.36+30=75.36

So he can drive 168 miles each day at most to stay within his budget.

Hope this helps :)

4 0
3 years ago
Adams sister wants to watch her intake of fat per day he estimates that the dinner will be 48grams of fat what percentage of her
Gnom [1K]
Let's assume that the total daily allowance of fat is given, otherwise let's just assign a variable for it.

We can make the formula based on the given data.

Percentage = Total daily allowance of fat given / total intake of fat per day * 100

So, the equation Percentage = Total / 48 * 100 will be used in order to get the percentage of the total amount.

7 0
3 years ago
What is the simplified form of the equation fraction 4 over 5 n minus fraction 1 over 5 equals fraction 2 over 5 n?
Gennadij [26K]
4/5n – 1/5 = 2/5n
Add 1/5 to both sides
4/5n = 2/5n + 1/5
Subtract 2/5n from both sides
2/5n = 1/5
Divide both sides by 2/5

n = 1/2

6 0
3 years ago
Read 2 more answers
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