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2 years ago

Fill in each blank to make the equation true.

Mathematics

2 answers:

vodka [1.7K]2 years ago

8 0

Hey bestie. There’s no picture to answer the question. Might have to re-upload this question.

icang [17]2 years ago

7 0

Yeahh i agree, theres no image, maybe it didnt load-
Repost it then

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-4x + y = -9<br> -<br> 5x + 2y = 3<br> :<br> Solve the Linear equation

Yuri [45]

-4x+y= -9 can be turned into
y= -9 + 4x

5x+2y=3 (plug y in)
5x+2(-9+4x)=3
5x-18+8x=3
5x+8x=3+18
13x=21
divide 13 on both sides
x=1.6

6 0

2 years ago

Our club has 25 members, and wishes to pick a president, secretary, and treasurer. In how many ways can we choose the officers,

Rus_ich [418]

Answer:

13800

Step-by-step explanation:

The order of the members is important (because each selected member will receive a different position), thus we then need to use the definition of permutation.

There are 25 members, of which 3 are selected.

$\begin{array}{l}n=25 \\r=3\\end{array}$

Evaluate the definition of a combination:

$P(25,3)=\frac{25 !}{(25-3) !}=\frac{25 !}{22 !}=25 \cdot 24 \cdot 23=13800$

8 0

2 years ago

A motor vehicle has a maximum efficiency of 39 mpg at a cruising speed of 40 mph. The efficiency drops at a rate of 0.1 mpg/mph

svp [43]

Answer:

38 mpg

Step-by-step explanation:

Initial efficiency = 39 mpg

Initial speed = 40 mph

Final speed = 50 mph

The efficiency drop between 40 mph and 50 mph is given by:

$E_d = 0.1 \frac{mpg}{mph}*\Delta V$

The total efficiency drop from 40 to 50 mph is:

$E_d = 0.1 \frac{mpg}{mph}*(50-40)mph\\E_d = 1\ mpg$

Therefore, the efficiency at 50 mph is:

$E_{50} = E_{40} -E_d\\E_{50} = 39 -1\\E_{50} = 38\ mpg$

5 0

3 years ago

What is the value of x in the figure shown below?

Pie

The value of X is 35 because the angle 35 measures the same as the angle X, hence their values are the same

5 0

2 years ago

Find two consecutive odd integers whose sum is 36.

miskamm [114]

2 consecutive odd integers...x and x + 2

x + (x + 2) = 36
2x + 2 = 36 <===

3 0

3 years ago

Read 2 more answers