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vfiekz [6]
3 years ago
11

Pls help this was due 3 minutes ago!!!!

Mathematics
2 answers:
ella [17]3 years ago
7 0

Answer:

-0.7

Step-by-step explanation:

2 8/10 = 2.8

2.8 + (-3.5) = -0.7

Shtirlitz [24]3 years ago
3 0

Answer:

=4

Step-by-step explanation:

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-1.2k + 3.9 - g + .5g + 7 + .3k
DedPeter [7]

Answer:

hi

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is 20+<br> 20+2-27+100
bonufazy [111]
It equals 169

Anyways thanks for points
5 0
3 years ago
Read 2 more answers
Jenny and Natalie are selling cheesecakes for a school fundraiser. Customers can buy chocolate cakes and vanilla cakes. Jenny so
IrinaVladis [17]

The cost of 1 chocolate cake is $ 6 and cost of 1 vanilla cake is $ 7

<em><u>Solution:</u></em>

Let "c" be the cost of 1 chocolate cake

Let "v" be the cost of 1 vanilla cake

<em><u>Jenny sold 14 chocolate cakes and 5 vanilla cakes for 119 dollars</u></em>

Therefore, we can frame a equation as:

14 x cost of 1 chocolate cake + 5 x cost of 1 vanilla cake = 119

14 \times c + 5 \times v=119

14c + 5v = 119 ------- eqn 1

<em><u>Natalie sold 10 chocolate cakes and 10 vanilla cakes for 130 dollars</u></em>

Therefore, we can frame a equation as:

10 x cost of 1 chocolate cake + 10 x cost of 1 vanilla cake = 130

10 \times c + 10 \times v = 130

10c + 10v = 130 -------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

Multiply eqn 1 by 2

28c + 10v = 238 ------ eqn 3

<em><u>Subtract eqn 2 from eqn 3</u></em>

28c + 10v = 238

10c + 10v = 130

( - ) --------------------------

18c = 108

c = 6

<em><u>Substitute c = 6 in eqn 1</u></em>

14(6) + 5v = 119

84 + 5v = 119

5v = 119 - 84

5v = 35

v = 7

Thus cost of 1 chocolate cake is $ 6 and cost of 1 vanilla cake is $ 7

8 0
3 years ago
What does y equal? ​
tensa zangetsu [6.8K]

Answer:

y=-4x+17

Step-by-step explanation:

\begin{pmatrix}4&1\end{pmatrix}\quad \mathrm{and}\quad \begin{pmatrix}2&9\end{pmatrix}

\mathrm{Computing\:dot\:product\:of\:two\:vectors}:\quad \left(x_1,\:\:\ldots ,\:\:x_n\right)\cdot \left(y,\:\:\ldots ,\:\:y_n\right)=\sum _{i=1}^nx_iy_i

=4\cdot \:2+1\cdot \:9

=17

5 0
3 years ago
If a 50-inch flat-screen now costs $1200, what will it cost in three years?
Ainat [17]
Twelve hundred times three equals 3600 so in 3 years it will cost 3600
5 0
3 years ago
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