3 years ago

I need help with these two

Mathematics

2 answers:

miskamm [114]3 years ago

8 0

Good work the answer above is correct ... hope this helped

Ymorist [56]3 years ago

7 0

1. 2:3, 2/3, 16 to 24

2. (-2, -1) would be in the bottom left and (1, 3) would be at the top right. (sorry I can't graph it for you but I hope this helps)

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Q: Resolve in factors abc - ab - c + 1

Kazeer [188]

Abc - ab - c + 1
=ab(c - 1) - (c - 1)
= (c - 1) (ab - 1)

7 0

2 years ago

Q1. Prasha has five blocks of wood. The total weight of all five blocks of wood is 3 kilograms. 4 of the blocks of wood each hav

harina [27]

Answer: Weight of the remaining block of wood =400g

Step-by-step explanation:

Total Weight of five(5) blocks = 3kg = 3000g

Weight of 4 out of the 5 blocks = 650x 4= 2600g

Weight of the remaining block of wood =Total Weight of five(5) blocks-Weight of 4 out of the 5 blocks

= 3000g-2600g

=400g

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3 years ago

an airplane takes off 12.5 miles south of a city and flies due north at a constant speed of 170 miles per hour. What is the plan

saveliy_v [14]

75 miles/hr* (45/60) hours=56.25. Initial position is -12.5. Add -12.5 to 56.25 which results in 43.75 miles due north.

6 0

4 years ago

Câu 1: cho hình chóp S.ABC có đáy là tam giác đều cạnh bằng a, cạnh bên SB vuông góc với mặt phẳng (ABC) , SB =2a. Tính thể tích

Maurinko [17]

Answer:

$\frac{\sqrt{3}}{6} a^{3}$ và $\frac{a^{3} }{6}$

Step-by-step explanation:

Câu 1: V = 1/3.2a. $\frac{\sqrt{3}}{4}$ $a^{2}$ = $\frac{\sqrt{3}}{6} a^{3}$

câu 2: Theo đề bài ta có SA là chiều cao và tam giác đáy SBC vuông tại S (hình chóp S.ABC đổi thành chóp A.SBC)

=> V = 1/3 SA.(diện tích tam giác SBC) = 1/3a. $\frac{a^{2} }{2}$ = $\frac{a^{3} }{6}$

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3 years ago

Need this ASAP! Taking a math quiz and my brain just went numb so I cant think

NikAS [45]

Answer:

$\frac{ - 12 + x}{11} = - 3 \\ \\ - 12 + x = - 3\times 11 \\ \\ - 12 + x = - 33 \\ \\ x = - 33 + 12 \\ \\ x = - 21$

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2 years ago