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Airida [17]
3 years ago
7

(a) (-3) × _____ = 4 × _____

Mathematics
2 answers:
Igoryamba3 years ago
8 0

Answer:

_3×4=4×_3=-12,pardon me if I am wrong I am just a beginner ❤

Assoli18 [71]3 years ago
4 0

\large\bf{\underline{Answer :}}

\huge \: ( - 3) \times \underline{4} = 4 \times \underline{( - 3)}

__________________________________________

\huge\bf{\underline{Proof :}}

\large\bf{\underline{L.H.S :}}

  • (-3) × 4 = -12

\large\bf{\underline{R.H.S :}}

  • 4 × (-3) = -12

\large\bf{\underline{Hence }}

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎\large\bf{\underline{L.H.S = R.H.S}}

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After 3 minutes, a submarine had descended to −320 feet. After 8 minutes, the submarine had descended to −420 feet. Assuming a l
LiRa [457]

Answer:

d(t) = -20t - 260

Step-by-step explanation:

The depth function is:

d(t) = mt + b

After 3 minutes, a submarine had descended to −320 feet.

This means that d(3) = -320. So

d(t) = mt + b

-320 = 3m + b

After 8 minutes, the submarine had descended to −420 feet.

This means that d(8) = -420. So

d(t) = mt + b

-420 = 8m + b

From the first equation:

b = -320 - 3m

So

-420 = 8m + b

-420 = 8m - 320 - 3m

5m = -100

m = \frac{-100}{5}

m = -20

And

b = -320 - 3*(-20) = -260

So

d(t) = -20t - 260

7 0
3 years ago
Can someone help me with graphing this function?
Paul [167]

p.s. Excuse the scribble.

Step-by-step explanation:

This is a piece-wise function. The three intervals we need to worry about are [0, 1), [1,2], and [2,4].

Separate the functions into their pieces and draw out the individual graphs. Place them together onto the graph within their respective intervals.

5 0
3 years ago
Ali and Ayesha shared an amount of money in the ratio 5:6. Ali received 20 bucks.How much did Ayesha receive?
Mars2501 [29]

Answer:

Your answer is $24

Step-by-step explanation:

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8 0
3 years ago
35 POINTS!!! The measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x. Write an equation that would al
Marina86 [1]

Answer:

The value of x is 40.

Step-by-step explanation:

The measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x.

According to the angle sum property of quadrilateral, the sum of interior angles of a quadrilateral is always 360 degree.

Since the measures of the angles in a quadrilateral are represented by x, 2x, 3x, and 3x, therefore

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This is the equation which is used to solve for the value of x.

9x=360

x=\frac{360}{9}

x=40

Therefore the value of x is 40.

6 0
3 years ago
The following data set shows the times a product failed in a series of tests. What is the range of this data set? {16, 12, 19, 1
Alika [10]

Answer:

9

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Highest number is 19 lowest is 10. 19-10 is 9.

7 0
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