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3 years ago

I have forgotten how to math? help? brainlest to first correct answer.

Mathematics

1 answer:

Ann [662]3 years ago

6 0

Answer:

90 meters squared

Step-by-step explanation:

First you multiply 10*4.5=45

Then you multiply 45 and 2 because 1cm=2m

45*2=90

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Addition (must show work) can someone solve 1. m + 13 =29 2. z + x =34 3. 87 + p = 136

azamat

Greetings ! Your Answer Is Below.

Answer;

1. m = 16

2. x = -z + 34 or z = -x + 34

3. p = 49

Step-by-step explanation;

1. m + 13 - 13 = 29 - 13 | Subtract 13 from both sides ( m = 16 )

2. - z + 34 | Add -z to both of the sides ( x = - z + 34 )

Or - x + 34 | Add -x to both of the sides ( z = - x + 34 )

3. 136 - 87 = 49 | Subtract 87 from both sides ( p = 49 )

[ Hope This Helped ! ]

3 0

3 years ago

For an arithmetic sequence, a35=57. If the common difference is 5. Find a1 and the sum of the first 61 terms.

Flauer [41]

$\displaystyle\bf\\a_{35}=57\\r=5\\----\\a_1=?\\S_{61}=?\\----\\Solve:\\1)\\a_1=a_{35}-(35-1)\times r=57-34\times 5=57-170=-113\\\boxed{\bf a_1=-113}\\\\$

$\displaystyle\bf\\2)\\A_{61}=a_1+(61-1)\times r=-113+60\times5=-113+300=187\\\\S_{61}=(-113)+(-108)+(-103)+...+(-8)+(-3)+2+7+12+...+187\\\\S_{61}=SA+SB\\\\SA=(-113)+(-108)+(-103)+...+(-8)+(-3)=-(3+8+103+108+113)\\\\n=\frac{113-8}{5}+1=\frac{105}{5}+1=21+1=22~terms\\SA=-\Big( \frac{n(113+3)}{2} \Big)=-\Big( \frac{22\times116}{2} \Big)=-11\times116 =-1276$

$\displaystyle\bf\\SB=2+7+12+...+187\\\\n=\frac{187-2}{5}+1=\frac{185}{5}+1=37+1=38~terms\\\\SB=\frac{n(187+2)}{2}=\frac{38\times189}{2}=19\times189=3591\\\\S_{61}=SA+SB=-1276+3591=2315\\\\\boxed{\bf S_{61}=2315}$

8 0

3 years ago

Margie needs to know the square footage for the first floor of the condo her client wants to make an offer on. The kitchen is 10

rodikova [14]

Answer: the total square footage is

850 ft³

Step-by-step explanation:

The kitchen is 10 feet by 15 feet. This means that the volume of the kitchen would be

10 × 15 = 150 ft³

The living/dining combo is 20 feet by 25 feet. This means that the volume of the living/dining combo would be

20 × 25 = 500 ft³

The office and sunroom are each 10 feet by 10 feet. This means that the volume of the office would be

10 × 10 = 100 ft³

Also, the volume of the sunroom would be

10 × 10 = 100 ft³

Therefore, the total square footage is

150 + 500 + 100 + 100 = 850 ft³

3 0

3 years ago

A(n) ___________________ variable is a qualitative variable such that there is no meaningful ordering or ranking of the categori

Licemer1 [7]

Answer: c. Nominal

Step-by-step explanation:

Level of measurement determines the nature of description .

The four levels of measurements scales are

1. Nominal scale

Categorize the data on the basis of the quality such as Gender, color, etc.

2. Ordinal scale

Order attributes according to their ranks. For example : 1 < 2 < 3 .

3. Interval scale

Describe the feature of the difference between any two categories. For example : Fahrenheit scale to measure temperature.

4. Ratio scale

Consist of the features of nominal, ordinal, and interval measures but in includes a "true zero" point.

For example : Age.

∴ A nominal variable is a qualitative variable such that there is no meaningful ordering or ranking of the categories.

Hence, the correct answer is c. Nominal .

5 0

3 years ago

Simplify the expression 7√7 - 2√28

Nadusha1986 [10]

7√7 - 2√28

2 sqrt(28) = 4 * sqrt(7)

7*sqrt(7) - 4*sqrt(7) =

3 * sqrt(7)

8 0

3 years ago

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