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zmey [24]
2 years ago
13

Find a b if a = 3i + 8j and b = -0.5i -4j.

Mathematics
2 answers:
Gekata [30.6K]2 years ago
3 0

Answer:

-33.5

Step-by-step explanation:

So this is a dot products vector problem, so the i and j represent x and y or horizontal and vertical components. So you multiple 3i and -0.5i and then separately multiply 8j and -4j. You get -1.5 and -32. Now all you have to do is add them and you get -33.5.

Basically in short:

1. Multiply the “i’s”.

2. Multiply the “j’s”.

3. Add the two products together.

HOPE THIS HELPS !! :-)

IceJOKER [234]2 years ago
3 0

Answer:

letter is A on edg

Step-by-step explanation:

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Colin spends 1/3 of his wages on rent and 1/4 on food. If he makes £636 per week, how much money does he have left?
uysha [10]

Answer:

£265

Step-by-step explanation:

Total fraction of money spent= \frac{1}{3} +\frac{1}{4}

                                                 = \frac{7}{12}

Actual money spent = \frac{7}{12} * £636

                                  = £371

Money he has left = £(636 - 371)

                               = £265

6 0
2 years ago
Read 2 more answers
For the members of a book group, the probability of randomly selecting a member who likes to read historical fiction is 47%, the
umka2103 [35]

Answer:

75%

Step-by-step explanation:

8 0
2 years ago
Steven and Julio each have 13 marbles. Megan has twice the number of marbles as Steven and Julio combined. Steven thinks that me
kodGreya [7K]

Answer:

50

Step-by-step explanation:

Steven = 13 marbles

Julio = 13 marbles

Megan has twice the number of marbles as Steven and Julio combined

Megan = 2 (13 + 13) = 2(26) = 52 marbles

Among the options (26, 13, 50, 169, 338), the only reasonable estimate is 50

6 0
2 years ago
Classify each characteristic according to whether it is true for an amoeba, a clock, or both.
Stells [14]

Answer:

Amoeba is a single celled eukaryotic organism, found in the water body. These organisms have a false feet called as pseudopodium. It helps in the locomotion and captures food from the external environment. The organism does not exhibit a well defined shape. It has organelles like nucleus and vacuoles surrounded by cytoplasm. The food being captured by psuedopodium is engulfed inside a vacuole. It reproduces by the process of asexual reproduction called as binary fission. The genetic material replicates by the mitotic division, then the cell divides into two equal daughter cells. The amoeba obtains energy from food, and it uses this energy to move, capture food and reproduce.

A clock is a non-living thing. That displays time. It has three needles or hands, the bigger hand displays hour, the small one displays minutes and the thin needle displays seconds. These hands or needles uses energy from a cell or battery.

Characteristics features of amoeba are as follows:

Uses energy

Has internal organization

Characteristics features of clock are as follows:

Uses energy

Contains cells

Lacks genetic material reproduces

Has a defined boundary

Has internal organization

Step-by-step explanation:

4 0
2 years ago
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Jason Witten's Salary Negotiation Let's say that tight end Jason Witten (a football player) was given two options when negotiati
Leokris [45]

Answer:

Option 1: It is better for him to be paid per catch, starting with 1 cent and doubling with each catch up to 110

Explanation:

If Jason were to be paid per catch given that he makes a total of 110 catches for the 2017 season in his new contract, he would make a total of :

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Therefore it is better for Jason to be paid per catch and not a flat fee of $2000000

3 0
1 year ago
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