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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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Find The Area Of This Parallelogram. Be Sure To Include The Correct Unit In Your Answer. (10 Points Guaranteed)
schepotkina [342]

Answer:

132ft²

Step-by-step explanation:

area of a parallelogram = base length × height

base length = 11 ft and height = 12ft

so area = 11 × 12 = 132ft²

5 0
3 years ago
A smokestacks, AB, is 55 m high. From two points C and D on the same side of the smokestack’s base B, the angles of elevation to
Helen [10]

Answer:

CD=10.15m

Step-by-step explanation:

<u>Find the distance of BC.</u>

Tan(40)=55/BC

BC=65.55m

<u>Find the distance of BD.</u>

Tan(36)=55/BD

BD=75.70m

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BD-BC=CD

75.70-65.55=CD

CD=10.15m

8 0
3 years ago
The manufacturer of a smart watch claims that individuals who pay attention to how many steps they take per day will inadvertent
drek231 [11]

Answer:

Hello your question is incomplete attached below is the complete question

answer :  1596 ± 2.861 \sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } } ------  ( A )

Step-by-step explanation:

I will use excel function to resolve this question

<u>Determine the 99% confidence of interval for the difference in mean  number of steps by all people</u>

∝ = 0.01

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Given that :

S1 = 1580

S2 = 2350

n1 = 20

n2 = 20

Difference in mean = x1 - x2 = 1596

Margin of Error = t * \sqrt{\frac{S^2_{1} }{n_{1} } +\frac{s^2_{2} }{n_{2} } }

∴  99% confidence of interval

= 1596 ± 2.861 \sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } } ------

8 0
3 years ago
The LCM and GCF of 4,32,12
Alex17521 [72]

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Step-by-step explanation:

4 0
3 years ago
A sushi restaurant makes 12 types of sushi rolls each day. They also offer 7 sashimi plates. A popular combination platter at th
VikaD [51]

Answer:

1386 possible combinations

Step-by-step explanation:

A sushi restaurant makes 12 types of sushi rolls each day. They also offer 7 sashimi plates. A popular combination platter at the restaurant allows the customer to choose 2 different types of rolls and 2 different types of sashimi plates. What is the number of possible combination that can be made.

12 types sushi roll - can choose 2

7 types of  sashimi - can choose 2

2 different types of rolls and 2 different types of sashimi

C₁₂,₂ * C₇,₂ = 66*21 = 1386

6 0
4 years ago
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