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3 years ago

15

Need took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional 10 points

for answering a bonus question correctly. How many points did Ned receive overall?

1 answer:

Vaselesa [24]3 years ago

3 0

100 - 24 = 76

76 + 10 = 86

Ned received 86 points overall.

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Sierra collected 39 seashells before breakfast and two and one third times as many after breakfast. How many seashells did Sierr

Marrrta [24]

Answer:

Step-by-step explanation:

Seashells collected before breakfast = 39

Seashells collected after breakfast = 2 and 1/3 = 2 $\frac{1}{3}$ ,

and 1/3 as a decimal = 0.3333

Add 2 to 0.3333 to get =2.3333 times

Therefore ,Seashells collected after breakfast = 2.3333*39 = 90.9987 ,which is roughly 91

Next, add 91 to 39 to get total; 91+36 = 127

The total number of Seashells Sierra collected were 127

4 0

3 years ago

PLEASE HELP ASAP THANK YOUUUU

GREYUIT [131]

Answer: C. The answer i got was C

8 0

3 years ago

Read 2 more answers

A tortoise travels 2/12 miles per hour describe two different methods to determine the number of miles it will take to walk 3 2/

suter [353]

Answer:

11/18 miles

Step-by-step explanation:

3 2/3=11/3

2/12=1/6

1/6*11/3=11/18

7 0

3 years ago

The second term in a geometric sequence is 20. The fourth term in the same sequence is 11.25. What is the common ratio

damaskus [11]

Let $a_n$ be the n'th term of the sequence.

so $a_1$ is the first term, $a_2$ the second term and so on...

In a geometric sequence with $a_1=c$ , and common ratio r, the terms are as follows:

$a_1=c$
$a_2=cr$
$a_3=c r^{2}$
$a_4=c r^{3}$
.
.
that is, each term is its previous term times the common ratio r.

In our example

$a_2=cr=20$ and $a_4=c r^{3}=11.25$

$\frac{a_2}{a_4}= \frac{cr}{c r^{3}}= \frac{1}{ r^{2}}= \frac{20}{11.25}= 1.778$

so $r^{2} =1/1.778=0.56$

$r= \sqrt{0.56}= 0.75$

Answer: r=0.75

3 0

3 years ago

please solve all of them Elaine bought a total of 15 shirts and pairs of pants She bought 7 more shirts then pants how many of e

mihalych1998 [28]

Answer

Question 1

4 pants

11 shirts

Question 2

Shady has 30 video games.

Preston has 19 video games.

Question 3

1 muffin costs $1.5

1 quart of milk costs $3

Explanation

Question 1

Let the number of shirts be s

Let the number of pants be p

She bought a total of 15 shirts and shirts

s + p = 15

She bought 7 more shirts than pants.

s = 7 + p

So, we can solve the simultaneous equation.

s + p = 15

s = 7 + p

Substitute for s in equation 1

s + p = 15

7 + p + p = 15

7 + 2p = 15

2p = 15 - 7

2p = 8

Divide both sides by 2

(2p/2) = (8/2)

p = 4 pants

s = 7 + p = 7 + 4 = 11 shirts

Question 2

Let the number of games Shady has be s

Let the number of games Preston has be p

Together, they have a total of 49 video games

s + p = 49

Shady has 11 more games than Preston.

s = 11 + p

So, we can solve the simultaneous equation.

s + p = 49

s = 11 + p

Substitute for s in equation 1

s + p = 49

11 + p + p = 49

11 + 2p = 49

2p = 49 - 11

2p = 38

Divide both sides by 2

(2p/2) = (38/2)

p = 19 video games

s = 11 + p = 11 + 19 = 30 video games

Question 3

Let the cost of a muffin be m

Let the cost of a quart of milk be q

The cost of 8 muffins and 2 quarts of milk is $18.

8m + 2q = 18

The cost of 3 muffins and 1 quart of milk is $7.50

3m + q = 7.5

So, we can solve the simultaneous equation

8m + 2q = 18

3m + q = 7.5

Solving this,

m = 1.5 dollars

q = 3 dollars

Hope this Helps!!!

3 0

1 year ago