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3 years ago

HELP ME [QUESTION IN IMAGE AND NOT THAT HARD EITHER]

Mathematics

2 answers:

kondaur [170]3 years ago

8 0

Answer:

Button #4. The last button. 8p = t.

Step-by-step explanation:

This is because there are 8 pieces of string, and p is equal to the length of one string, so one string times 8 is the total length of all the strings.

PtichkaEL [24]3 years ago

3 0

Answer choice 4 (8p=t)

explanation:

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-5/2 x (3x + 4) < 6x - 3x Please show work

Pie

Answer:

$x > - \frac{20}{21}$

Step-by-step explanation:

-5/2 × (3x + 4) < 6x - 3x

-15/2x - 10 < 3x

-15x - 20 < 6x

-15x - 6x < 20

-21x < 20

x > -20/21

8 0

2 years ago

Read 2 more answers

Evelyn drinks A glass of water a day which is 56 glasses of water in a week how many glasses of water dish does she drink in a y

Ede4ka [16]

Answer:

2912

Step-by-step explanation:

Your question wording is a little confusing but here's the steps:

She drinks 56 glasses of water each week.

There's 52 weeks in 1 year.

56 times 52 = 2912.

3 0

2 years ago

Philip made a total of 9 bracelets and necklaces from 120 inches of cord. He used 8 inches of cord for each bracelet and 20 inch

Viktor [21]

Answer:

So Philip made 5 bracelets and 4 necklaces.

Step-by-step explanation:

Let x = number of bracelets and y = number of necklaces.

Since we have a total of 9 bracelets and necklaces,

x + y = 9 (1)

Also, we have 8 inches of cord for each bracelet and 20 inches of cord for each necklace, then the total length for the bracelet is 8x and that for the necklace is 20y.

So, the total length for both is 8x + 20y. Since the total length of cord used is 120 inches,

8x + 20y = 120 (2)

Simplifying it we have

2x + 5y = 30 (3).

Writing equations (1) and (3) in matrix form, we have

$\left[\begin{array}{ccc}1&1\\2&5\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}9\\30\end{array}\right]$

Using Cramer's rule to solve for x and y,

$x = det \left[\begin{array}{ccc}9&1\\30&5\end{array}\right] /det \left[\begin{array}{ccc}1&1\\2&5\end{array}\right] \\$

x = (9 × 5 - 30 × 1) ÷ (1 × 5 - 1 × 2)

x = (45 - 30) ÷ (5 - 2)

x = 15 ÷ 3

x = 5

$y = det \left[\begin{array}{ccc}1&9\\2&30\end{array}\right] /det \left[\begin{array}{ccc}1&1\\2&5\end{array}\right] \\$

y = (30 × 1 - 9 × 2) ÷ (1 × 5 - 1 × 2)

y = (30 - 18) ÷ (5 - 2)

y = 12 ÷ 3

y = 4

So Philip made 5 bracelets and 4 necklaces.

3 0

3 years ago

15. Choose the graph of 3x + y = -2. A. 41 -6 -4 -2

lana [24]

Answer:-6

Step-by-step explanation:

4 0

3 years ago

15 > or equal to (-3w)

enot [183]

15 should be greater than (-3w) becuase whatever you times with -3 it'll equal negative something so it's 15.

6 0

3 years ago