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3 years ago

four dozen bagels cost $30 how much change will you receive if you pay for a dozen bagels with a $10 bill

Mathematics

2 answers:

Alex17521 [72]3 years ago

8 0

You have change of $2.50. Since there are 48 bagels in 4 dozen, $30/48 is .625 per bagel, which multiplied by 12 (amount in a dozen) would equal 7.50, having 10 - 7.5 equal 2.5. Hope this helps

marshall27 [118]3 years ago

5 0

Well, one dozen bagels would cost $7.50 so the amount of change you would receive would be $2.50

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Dr. Irvine saw 130 patients in one week. The ratio of kids to adults that he saw is 3 to 7. If k represents the number of kids a

Vitek1552 [10]

Answer:

The correct answer is

C. k+d=130

7k = 3d

Number of kids Dr. Irvine see in a week is 39.

Step-by-step explanation:

1. Let's review the information given to answer the question correctly:

Number of patients Dr. Irvine see in a week = 130

Radio of kids to adults = 3:7 or 3/7

Number of Kids = k

Number of adults = d

2. Let's find the equations system that should be set up to find out how many kids Dr. Irvine see

k + d = 130 (Number of patients Dr. Irvine see in a week)

Including the ratio:

7k = 3d

Replacing d:

d = 130 - k

Now substituting:

7k = 3 * (130 - k)

7k = 390 - 3k

10k = 390

k = 390/10

k = 39

3 0

3 years ago

Please find the angles

marusya05 [52]

Step-by-step explanation:

a/q both the traingles are similar/congruent so,

theri angles also have equal value

angle Q = angle A

so,

apply angle sum property of triangle in ∆PQR

so according to it

Angle

P + Q + R = 180

→ 45° + 15° + Q = 180

→ 60° + Q = 180

→ Q = 180 - 60 = 60°

→ angle Q = 60°

therefore, angle A = 60°

Angle R = angle B

so,

angle B = 15°

as, angle P = angle C

so,

angle C = 45°

hope this answer helps you dear....take care and may u have a great day ahead!

6 0

3 years ago

MAVERICK [17]

Answer:

$15\ units$

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is equal and the corresponding angles are congruent

In this problem Triangles PQT and RQS are similar by AA Similarity Theorem (The three angles are congruent)

therefore

$\frac{12}{16}=\frac{x}{20}\\ \\x=12*20/16\\ \\x=15\ units$

6 0

4 years ago

What is 9 divided by 2 over 7?

andreev551 [17]

2 over 7 =0,28
9/0,28=32,14

Hope it helped

6 0

3 years ago

Can I get help answering this question? It's a derivatives question, further info in the attachment.

Nadusha1986 [10]

$\bf f(x)=|3+9x|\implies f(x)=\sqrt{(3+9x)^2}\implies f(x)=[(3+9x)^2]^{\frac{1}{2}}
\\\\\\
\cfrac{dy}{dx}=\stackrel{chain~rule}{\cfrac{1}{2}[(3+9x)^2]^{-\frac{1}{2}}\cdot 2(3+9x)\cdot 9}\implies \cfrac{dy}{dx}=\cfrac{9(3+9x)}{[(3+9x)^2]^{\frac{1}{2}}}
\\\\\\
\cfrac{dy}{dx}=\cfrac{27+81x}{|3+9x|}\\\\
-------------------------------$

$\bf \textit{left-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{-(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{-3-9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{-3+3}\implies \stackrel{unde fined}{\cfrac{0}{0}}\\\\
-------------------------------\\\\
\textit{right-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{+(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{3+9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{3-3}\implies \stackrel{unde fined}{\cfrac{0}{0}}$

8 0

3 years ago