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3 years ago

Which matrix multiplication is possible?

Mathematics

1 answer:

ruslelena [56]3 years ago

8 0

Answer: D

Step-by-step explanation:

dim A=(a,b), dim B=(c,d), in order to multiply, c=b

1) dim A=(1,2) , dim B=(1,2) but 2≠1

2) dim A=(2,1) , dim B=(2,2) but 1≠2

3) dim A=(2,2) , dim B=(1,2) but 2≠1

4) dim A=(2,1) , dim B=(1,2) 1=1: result (2,2)

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Factor x^2 + 4x + 340

iris [78.8K]

Answer:

its an unsolvible problem not kiding

Step-by-step explanation:

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4 years ago

The amounts of sugar (grams of sugar per gram of cereal) and calories (per gram of cereal) were recorded for a sample of 16 diff

tigry1 [53]

Answer:

The best predicted calorie count for a cereal with a measured sugar amount of 0.40 g is 3.864

Step-by-step explanation:

Consider the provided information.

he linear correlation coefficient is r= 0.765 and the regression equation is $\hat y= 3.46 + 1.01\times x$

The mean of the 16 amounts of sugar is 0.295 grams and the mean of the 16 calorie counts is 3.76.We need to find the best predicted calorie count for a cereal with a measured sugar amount of 0.40 g

Substitute x = 0.40 in the given equation.

$\hat y= 3.46 + 1.01\times 0.40$

$\hat y= 3.46 + 0.404$

$\hat y= 3.864$

Hence, the best predicted calorie count for a cereal with a measured sugar amount of 0.40 g is 3.864

6 0

3 years ago

It would take an hour for plane A to meet plane B. If the distance between them will be 200 miles in 45 minutes, how far are the

masha68 [24]

Answer: 125 miles

if you do the math you will get the same answer.

8 0

3 years ago

What is the unit rate $1.29 for 15oz to nearest tenth

Nina [5.8K]

Answer:

The unit price of an item is the cost for each unit.

The unit price may be calculated for several reasons.

It will allow an easy comparison of the cost of the same quantity of items that come in different sizes.

For example, Company A sells peaches in a can. Their can holds 16 oz of peaches at a price of $1.60. Company B also sells peaches in a can, but their can holds 10 oz of peaches at a price of $1.10. At first glance, Company B looks like they might have cheaper peaches because of the lower overall price, but when you calculate the unit price, you get a more accurate way to compare.

For Company A, $1.60 ÷ 16oz = $0.10 per ounce.

For Company B, $1.10 ÷ 10oz = $0.11 per ounce.

The peaches are measured with ounces as the unit, so now that we have unit prices, we can definitely tell that Company A is the better deal, if you like peaches!

Unit price can also be helpful to find the cost of a single item when many items are purchased together. This may be required if the items are going to be divided up and resold. It could also be useful if several people will pay together with each person paying their fair share of the cost based on how many items they receive.

Step-by-step explanation:

5 0

3 years ago

a book is 6 inches wide and 9 inches tall A publisher want to scale factor of 1.5 to enlarge a book. what will the area of the f

VladimirAG [237]

Answer:

Step-by-step explanation:

6 inches enlarged by 1.5 = 9 inches

9 inches enlarged by 1.5 = 13.5 inches

Area would be 9x13.5=

121.5 inches for the area

Hope this helps you out.

8 0

4 years ago